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LinkBack | Thread Tools | Display Modes |
12-03-2005, 03:41 PM
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#1 (permalink) |
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Got turbine on my mind
 
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CEL/DTC/MIL Code Descriptions
HTML Code:
<PRE> | DTC | Description | Possible Causes | Diagnostic Aides | |________________________|________________________|________________________|________________________| | P0102 - Mass Air Flow | The MAF sensor circuit | * MAF sensor | A MAF V PID (MAF PID) | | (MAF) Circuit Low | is monitored by the | disconnected | reading less than 0.23 | | Input | PCM for low air flow | * MAF circuit open to | volts (Refer to | | | (or voltage) input | PCM | equivalent grams | | | through the | * VPWR open to MAF | /second chart in | | | comprehensive | sensor | Pinpoint Test DC) in | | | component monitor | * PWR GND open to MAF | continuous memory or | | | (CCM). If during key | sensor | key ON and engine | | | ON engine running the | * MAF RTN circuit | running indicates a | | | air flow (or voltage) | open to PCM | hard fault. | | | changes below a | * MAF circuit shorted | | | | minimum calibrated | to GND | | | | limit, the test fails. | * Intake air leak | | | | | (near MAF sensor) | | | | | * A closed [throttle | | | | | indication throttle | | | | | position (TP) | | | | | sensor system] | | | | | * Damaged MAF sensor | | | | | * Damaged PCM | | |________________________|________________________|________________________|________________________| | P0103 - Mass Air Flow | The MAF sensor circuit | * MAF sensor screen | A MAF V PID (MAF PID) | | (MAF) Circuit High | is monitored by the | is blocked | reading less than 4.6 | | Input | PCM for high air flow | * MAF circuit shorted | volts (Refer to | | | (or voltage) input | to VPWR | equivalent grams | | | through the | * Damaged MAF sensor | /second chart in | | | comprehensive | * Damaged PCM | Pinpoint Test DC) in | | | component monitor | | continuous memory or | | | (CCM). If during key | | key ON and engine | | | ON engine OFF or key | | running indicates a | | | ON engine running the | | hard fault. | | | air flow (or voltage) | | | | | changes above a | | | | | maximum calibrated | | | | | limit, the test fails. | | | |________________________|________________________|________________________|________________________| | P0106 - Barometric | Baro sensor input to | * Slow responding | - VREF voltage should | | (BARO) Pressure Sensor | the PCM is monitored | BARO sensor | be between 4.0 and | | Circuit Performance | and is not within the | * Electrical circuit | 6.0 volts | | | calibrated value. | failure | - PID reading is in | | | | * Damaged BARO sensor | frequency | | | | * Damaged PCM | | |________________________|________________________|________________________|________________________| | P0107 - BARO Sensor | Sensor operating | * Open in the circuit | - VREF should be | | Low Voltage Detected | voltage is less than | , or short to groun | greater than 4.0 | | | 5.0 volts (VREF), as a | * VREF circuit open, | volts | | | result it failed below | or short to ground | - PID reading is in | | | the minimum allowable | * Damaged BARO sensor | frequency | | | calibrated parameter. | * Damaged PCM | | |________________________|________________________|________________________|________________________| | P0108 - BARO Sensor | Sensor operating | * VREF shorted to | - VREF should be less | | High Voltage Detected | voltage is greater | VWPR | than 6.0 volts. | | | than 5.0 volts (VREF), | * BARO signal shorted | * PID reading is in | | | as a result it failed | to VPWR | frequency | | | above maximum | * Damaged BARO sensor | | | | allowable calibrated | * Damaged PCM | | | | parameter. | | | |________________________|________________________|________________________|________________________| | P0109 - BARO Sensor | The sensor signal to | * Loose electrical | Check harness and | | Circuit Intermittent | the PCM is failing | connection | connection. | | | intermittently. | * Damaged BARO sensor | | |________________________|________________________|________________________|________________________| | P0112 - Intake Air | Indicates the sensor | * Grounded circuit in | - Using signal | | Temperature (IAT) | signal is less than | harness | simulation, | | Circuit Low Input | Self-Test minimum. The | * Damaged sensor | disconnect sensor | | | IAT sensor minimum is | * Improper harness | and simulate 1.0V | | | 0.2 volts or 121øC | connection | on sensor signal | | | (250øF). | * Damaged PCM | circuit. Simulated | | | | | 1.0V signal and | | | | | scan PID voltage | | | | | value should be | | | | | similar. If voltage | | | | | is similar check | | | | | sensor, if voltage | | | | | is not similar | | | | | check related | | | | | circuit and PCM. | |________________________|________________________|________________________|________________________| | P0113 - Intake Air | Indicates the sensor | * Open circuit in | - Using signal | | Temperature (IAT) | signal is greater than | harness | simulation, | | Circuit High Input | Self-Test maximum. The | * Sensor signal short | disconnect sensor | | | IAT sensor maximum is | to power | and simulate 1.0V | | | 4.6 volts or -50øC ( | * Damaged sensor | on sensor signal | | | -46øF). | * Improper harness | circuit. Simulated | | | | connection | 1.0V signal and | | | | * Damaged PCM | scan PID voltage | | | | | value should be | | | | | similar. If voltage | | | | | is similar check | | | | | sensor, if voltage | | | | | is not similar | | | | | check related | | | | | circuit and PCM. | |________________________|________________________|________________________|________________________| | P0117 - Engine Coolant | Indicates the sensor | * Grounded circuit in | - Using signal | | Temperature (ECT) | signal is less than | harness | simulation, | | Circuit Low Input | Self-Test minimum. The | * Damaged sensor | disconnect sensor | | | ECT sensor minimum is | * Improper harness | and simulate 1.0V | | | 0.2 volts or 121øC | connection | on sensor signal | | | (250øF). Note on some | * Damaged PCM | circuit. Simulated | | | vehicles that are not | | 1.0V signal and | | | equipped with an ECT | | scan PID voltage | | | sensor, CHT can be | | value should be | | | used and can set this | | similar. If voltage | | | DTC. | | is similar check | | | | | sensor, if voltage | | | | | is not similar | | | | | check related | | | | | circuit and PCM. | |________________________|________________________|________________________|________________________| | P0118 - Engine Coolant | Indicates the sensor | * Open circuit in | - Using signal | | Temperature (ECT) | signal is greater than | harness | simulation, | | Circuit High Input | Self-Test maximum. The | * Sensor signal short | disconnect sensor | | | ECT sensor maximum is | to power | and simulate 1.0V | | | 4.6 volts or -50øC ( | * Damaged PCM | on sensor signal | | | -46øF). Note on some | * Improper harness | circuit. Simulated | | | vehicles that are not | connection | 1.0V signal and | | | equipped with an ECT | * Damaged sensor | scan PID voltage | | | sensor, CHT can be | | value should be | | | used and can set this | | similar. If voltage | | | DTC. | | is similar check | | | | | sensor, if voltage | | | | | is not similar | | | | | check related | | | | | circuit and PCM. | |________________________|________________________|________________________|________________________| | P0121 - Throttle | The TP sensor circuit | * TP circuit open to | Drive vehicle, bring | | Position (TP) Circuit | is monitored by the | PCM | to a stop, turn key | | Performance Problem | PCM for a none closed | * Damaged TP sensor | OFF. Start vehicle, | | | throttle position at | * SIG RTN circuit | run key ON engine | | | idle. If key ON engine | open to TP sensor | running self-test at | | | running self-test | | idle. Access KOER | | | terminates upon | | diagnostic trouble | | | placing the | | codes on scan tool. | | | transmission range | | | | | selector in gear | | | | | (DRIVE or REVERSE) or | | | | | when closing the | | | | | throttle (idle) after | | | | | opening it (in PARK or | | | | | NEUTRAL) the TP closed | | | | | throttle position is | | | | | not attained, the test | | | | | fails. | | | |________________________|________________________|________________________|________________________| | P0122 - Throttle | The TP sensor circuit | * TP sensor not | A TP PID (TP V PID) | | Position (TP) Circuit | is monitored by the | seated properly | reading less than | | Low Input | PCM for a low TP | * TP circuit open to | 3.42% (0.17 volt) in | | | rotation angle (or | PCM | key ON engine OFF, | | | voltage) input through | * VREF open to TP | continuous memory or | | | the comprehensive | sensor | key ON engine running | | | component monitor | * TP circuit short to | indicates a hard | | | (CCM). If during key | GND | fault. | | | ON engine OFF or key | * Damaged TP sensor | | | | ON engine running the | * Damaged PCM | | | | TP rotation angle (or | | | | | voltage) changes below | | | | | a minimum calibrated | | | | | limit, the test fails. | | | |________________________|________________________|________________________|________________________| | P0123 - Throttle | The TP sensor circuit | * TP sensor not | A TP PID (TP V PID) | | Position (TP) Circuit | is monitored by the | seated properly | reading greater than | | High Input | PCM for a high TP | * TP circuit short to | 93% (4.65 volts) in | | | rotation angle (or | PWR | key ON engine OFF, | | | voltage) input through | * VREF short to PWR | continuous memory or | | | the comprehensive | * SIG RTN circuit | key ON engine running | | | component monitor | open to TP sensor | indicates a hard | | | (CCM). If during key | * Damaged TP sensor | fault. | | | ON engine OFF or key | * Damaged PCM | | | | ON engine running the | | | | | TP rotation angle (or | | | | | voltage) changes above | | | | | maximum calibrated | | | | | limit, the test fails. | | | |________________________|________________________|________________________|________________________| | P0125 - Insufficient | Indicates the ECT | * Insufficient warm | Compare ECT PID to | | Coolant Temperature | sensor has not | up time | thermostat | | For Closed Loop Fuel | achieved the required | * Low engine coolant | specification when | | Control | temperature level to | level | vehicle is at | | | enter closed loop | * Leaking or stuck | operating temperature. | | | operating conditions | open thermostat | Temperature readings | | | within a specified | * Malfunctioning ECT | should be similar. | | | amount of time after | sensor | | | | starting engine. | | | |________________________|________________________|________________________|________________________| | P0131 - HO2S Sensor | The HO2S sensor is | * Contaminated HO2S | | | Circuit Out of Range | monitored for a | (water, fuel, etc) | | | Low Voltage (HO2S-11) | negative voltage known | * Crossed HO2S signal | | | | as characteristic | /signal return | | | | shift downward (CSD). | wiring | | | | If the sensor is | | | | | thought to be | | | | | switching from 0 volts | | | | | to -1 volts during | | | | | testing, the PCM will | | | | | use this input and | | | | | remain in fuel | | | | | control. | | | |________________________|________________________|________________________|________________________| | P0133 - HO2S Sensor | The HEGO Monitor | * Contaminated HO2S | Access HO2S test | | Circuit Slow Response | checks the HO2S Sensor | sensor. | results from the | | (HO2S-11) | frequency and | * Exhaust leaks. | Generic OBD-II menu to | | | amplitude. If during | * Shorted /open | verify DTC. | | | testing the frequency | wiring. | | | | and amplitude were to | * Improper fueling. | | | | fall below a | * MAF sensor. | | | | calibrated limit, the | * Deteriorating HO2S | | | | test will fail. | sensor. | | | | | * Inlet air leaks. | | |________________________|________________________|________________________|________________________| | P0135 - HO2S Sensor | During testing the | * Short to VPWR in | - wiring. | | Circuit Malfunction | HO2S Heaters are | harness or HO2S. | - Damaged HO2S | | (HO2S-11) | checked for opens | * Water in harness | heater. | | | /shorts and excessive | connector. | - Damaged PCM. | | | current draw. The test | * Open VPWR circuit. | | | | fails when current | * Open GND circuit. | | | | draw exceeds a | * Low battery | | | | calibrated limit and | voltage. | | | | /or an open or short | * Corrosion or poor | | | | is detected. | mating terminals | | | | | and wiring | | | | | * Damaged HO2S | | | | | heater. | | | | | * Damaged PCM. | | |________________________|________________________|________________________|________________________| | P0136 - HO2S Sensor | The downstream HO2S | * Pinched, shorted, | | | Circuit Malfunction | sensor(s) are | and corroded wiring | | | (HO2S-12) | continuously checked | and pins. | | | | for maximum and | * Crossed sensor | | | | minimum voltages. The | wires. | | | | test fails when the | * Exhaust leaks. | | | | voltages fail to meet | * Contaminated or | | | | the calibrated limits. | damaged sensor. | | |________________________|________________________|________________________|________________________| | P0141 - HO2S Sensor | See DTC P0135 | | | | Circuit Malfunction | | | | | (HO2S-125) | | | | |________________________|________________________|________________________|________________________| | P0151 - HO2S Sensor | See DTC P0131 | | | | Circuit Out of Range | | | | | Low Voltage (HO2S-21) | | | | |________________________|________________________|________________________|________________________| | P0153 - HO2S Sensor | See DTC P0133. | | | | Circuit Slow Response | | | | | (HO2S-21) | | | | |________________________|________________________|________________________|________________________| | P0155 - HO2S Sensor | See DTC P0135 | | | | Circuit Malfunction | | | | | (HO2S-21) | | | | |________________________|________________________|________________________|________________________| | P0156 - HO2S Sensor | See DTC P0136 | | | | Circuit Malfunction | | | | | (HO2S-22) | | | | |________________________|________________________|________________________|________________________| | P0161 - HO2S Sensor | See DTC P0135 | | | | Circuit Malfunction | | | | | (HO2S-22) | | | | |________________________|________________________|________________________|________________________| | P0171 - System to Lean | The Adaptive Fuel | | | | (Bank 1) | Strategy continuously | | | | | monitors fuel delivery | | | | | hardware. The test | | | | | fails when the | | | | | adaptive fuel tables | | | | | reach a rich | | | | | calibrated limit. | | | |________________________|________________________|________________________|________________________| | P0172 - System to Rich | The Adaptive Fuel | See Possible Causes | | | (Bank 1) | Strategy continuously | for DTC P0171 | | | | monitors the fuel | | | | | delivery hardware. The | | | | | test fails when the | | | | | adaptive fuel tables | | | | | reach a lean | | | | | calibrated limit. | | | |________________________|________________________|________________________|________________________| | P0174 - System to Lean | The Adaptive Fuel | See Possible Causes | | | (Bank 2) | Strategy continuously | for DTC P0171. | | | | monitors the fuel | | | | | delivery hardware. The | | | | | test fails when the | | | | | adaptive fuel tables | | | | | reach a rich | | | | | calibrated limit. | | | |________________________|________________________|________________________|________________________| | P0175 - System to Rich | The Adaptive Fuel | See Possible Causes | A SHRTFT-1,2 PID value | | (Bank 2) | Strategy continuously | for DTC P0171. | between -25% to +35% | | | monitors the fuel | For lean and rich | and a LONGFT-1,2 PID | | | delivery hardware. The | DTCs: | value between -35% to | | | test fails when the | * Fuel system | +35% is acceptable. | | | adaptive fuel tables | * Excessive fuel | Reading beyond these | | | reach a lean | pressure. | values indicate a | | | calibrated limit. | * Leaking | failure. | | | | /contaminated fuel | | | | | injectors. | | | | | * Leaking fuel | | | | | pressure regulator. | | | | | * Low fuel pressure | | | | | or running out of | | | | | fuel. | | | | | * Vapor recovery | | | | | system. | | | | | * Induction system: | | | | | - Air leaks after | | | | | the MAF. | | | | | - Vacuum Leaks. | | | | | - PCV system. | | | | | - Improperly seated | | | | | engine oil | | | | | dipstick. | | | | | * EGR system: | | | | | - Leaking gasket. | | | | | - Stuck EGR valve. | | | | | - Leaking diaphragm | | | | | or EVR. | | | | | * Base Engine: | | | | | - Oil overfill. | | | | | - Cam timing. | | | | | - Cylinder | | | | | compression. | | | | | - Exhaust leaks | | | | | before or near | | | | | the HO2Ss. | | |________________________|________________________|________________________|________________________| | P0176 - Flexible Fuel | The FF sensor input | * Open or short in FF | A flex fuel (FF) PID | | (FF) Sensor Circuit | signal to PCM is | sensor VPWR circuit | reading of 0 Hz with | | Malfunction | continuously | * Open in battery | the key ON and engine | | | monitored. The test | ground to FF sensor | OFF or with engine at | | | fails when the signal | circuit | idle indicates a hard | | | falls out of a maximum | * Open in FF sensor | fault. | | | or minimum calibrated | signal circuit | | | | range. | * Short to ground in | | | | | FF sensor signal | | | | | circuit | | | | | * Fuel contamination | | | | | * Short to VPWR in FF | | | | | sensor battery | | | | | ground circuit | | | | | * Short to VPWR in FF | | | | | sensor signal | | | | | circuit | | | | | * Fuel separation | | | | | * Damaged FF sensor | | | | | * Damaged PCM | | |________________________|________________________|________________________|________________________| | P0180 - Engine Fuel | The comprehensive | * Open or short in | Verify EFT-PID value | | Temperature Sensor A | component monitor | harness. | to determine open or | | Circuit Low Input | (CCM) monitors the EFT | * Low ambient | short. | | (EFT) | sensor circuit to the | temperature | | | | PCM for low and high | operation. | | | | voltage. If voltage | * Improper harness | | | | were to fall below or | connection. | | | | exceed a calibrated | * Damaged EFT sensor. | | | | limit and amount of | * Damaged PCM. | | | | time during testing, | | | | | the test will fail. | | | |________________________|________________________|________________________|________________________| | P0181 - Engine Fuel | The comprehensive | * Open or short in | Verify EFT-PID value | | Temperature Sensor A | component monitor | harness. | to determine open or | | Circuit Range/ | (CCM) monitors the EFT | * Low ambient | short. | | Performance (EFT) | Temperature for | temperature | | | | acceptable operating | operation. | | | | temperature. If during | * Improper harness | | | | testing voltage were | connection. | | | | to fall below or | * Damaged EFT sensor. | | | | exceed a calibrated | * Damaged PCM. | | | | limit, a calibrated | | | | | amount of time the | | | | | test will fail. | | | |________________________|________________________|________________________|________________________| | P0182 - Engine Fuel | The comprehensive | * Short in harness. | Verify EFT-PID and | | Temperature Sensor A | component monitor | * VREF open or | VREF values to | | Circuit Low Input | (CCM) monitors the EFT | shorted. | determine open or | | (EFT) | sensor circuit to the | * Low ambient | short. | | | PCM for low voltage. | temperature | | | | If voltage were to | operation. | | | | fall below a | * Improper harness | | | | calibrated limit and | connection. | | | | amount of time during | * Damaged EFT sensor. | | | | testing, the test will | * Damaged PCM. | | | | fail. | | | |________________________|________________________|________________________|________________________| | P0183 - Engine Fuel | The comprehensive | * Open or short to | Verify EFT-PID value | | Temperature Sensor A | component monitor | PWR in harness. | to determine open or | | Circuit High Input | (CCM) monitors the EFT | * Damaged EFT sensor. | short. | | (EFT) | sensor circuit to the | * Improper harness | | | | PCM for high voltage. | connection. | | | | If voltage were to | * Damaged PCM. | | | | exceed a calibrated | | | | | limit and a calibrated | | | | | amount of time during | | | | | testing, the test will | | | | | fail. | | | |________________________|________________________|________________________|________________________| | P0186 - Engine Fuel | See DTC P0181. | | | | Temperature Sensor B | | | | | Circuit Range | | | | | /Performance (EFT) | | | | |________________________|________________________|________________________|________________________| | P0187 - Engine Fuel | See DTC P0182. | | | | Temperature Sensor B | | | | | Circuit Low Input | | | | | (EFT). | | | | |________________________|________________________|________________________|________________________| | P0188 - Engine Fuel | See DTC P0183. | | | | Temperature Sensor B | | | | | Circuit High Input | | | | | (EFT) | | | | |________________________|________________________|________________________|________________________| | P0190 - Fuel Rail | The comprehensive | * VREF open in | Verify VREF voltage | | Pressure Sensor | component monitor | harness. | between 4.0 and 6.0V. | | Circuit Malfunction | (CCM) monitors the FRP | * VREF open in | | | (FRP) | sensor to the PCM for | sensor. | | | | VREF voltage. The test | * VREF open in PCM. | | | | fails when the VREF | | | | | voltage from the PCM | | | | | drops to a voltage | | | | | less than a minimum | | | | | calibrated value. | | | |________________________|________________________|________________________|________________________| | P0191 - Fuel Rail | The comprehensive | * High fuel pressure. | A FRP PID value during | | Pressure Sensor | component monitor | * Low fuel pressure. | KOER of 138 kpa (20 | | Circuit Performance | (CCM) monitors the FRP | * Damaged FRP sensor. | psi) and 413 kpa (60 | | (FRP) | pressure for | * Excessive | psi) for gasoline or | | | acceptable fuel | resistance in | 586 kpa (85 psi) and | | | pressure. The test | circuit. | 725 kpa (105 psi) for | | | fails when the fuel | * Low or no fuel. | natural gas vehicles | | | pressure falls below | | (NG) is acceptable. | | | or exceeds a minimum | | | | | /maximum calibrated | | | | | value for a calibrated | | | | | period of time. | | | |________________________|________________________|________________________|________________________| | P0192 - Fuel Rail | The comprehensive | * FRP signal shorted | A FRP PID value during | | Pressure Sensor | component monitor | to SIG RTN or PWR | KOER or KOEO less than | | Circuit Low Input | (CCM) monitors the FRP | GND. | 0.3 volts for gasoline | | (FRP) | sensor circuit to the | * FRP signal open (NG | or 0.5 volts for | | | PCM for low voltage. | only) | natural gas vehicles | | | If voltage were to | * Low fuel pressure | (NG) would indicate a | | | fall below a | (NG only) | hard fault. | | | calibrated limit and | * Damaged FRP sensor. | | | | amount of time during | * Damaged PCM. | | | | testing, the test will | | | | | fail. | | | |________________________|________________________|________________________|________________________| | P0193 - Fuel Rail | The comprehensive | * FRP signal shorted | A FRP PID value during | | Pressure Sensor | component monitor | to VREF or VPWR. | KOER or KOEO less than | | Circuit High Input | (CCM) monitors the FRP | * FRP signal open | 0.3 volts for gasoline | | (FRP) | sensor circuit to the | (gasoline only) | or 0.5 volts for | | | PCM for high voltage. | * Low fuel pressure | natural gas vehicles | | | If voltage were to | (NG only) | (NG) would indicate a | | | fall below a | * Damaged FRP sensor. | hard fault. | | | calibrated limit and a | * Damaged PCM. | | | | calibrated amount of | * High fuel pressure | | | | time during testing, | (caused by damaged | | | | the test will fail. | fuel pressure | | | | | regulator) NG. | | |________________________|________________________|________________________|________________________| | P0230 - Fuel Pump | NOTE: For natural gas | * Open or shorted | * When the FPF PID | | Primary Circuit | applications, the | fuel pump (FP) | reads YES, a fault | | Malfunction | following description | circuit | is currently | | | applies to the fuel | * Open VPWR circuit | present. | | | shutoff valve (FSV) | to fuel pump relay | * An open circuit or | | | circuit. The PCM | * Damaged fuel pump | short to ground can | | | monitors the fuel pump | relay | only be detected | | | (FP) circuit output | * Damaged PCM | with the fuel pump | | | from the PCM. The test | | commanded OFF. | | | fails if: With the FP | | * A short to power | | | output commanded ON | | can only be | | | (grounded), excessive | | detected with the | | | current draw is | | fuel pump commanded | | | detected on the FP | | ON. | | | circuit; or with the | | * During KOEO and | | | FP output commanded | | KOER self-test, the | | | OFF, voltage is not | | fuel pump output | | | detected on the FP | | command will be | | | circuit (the PCM | | cycled ON and OFF. | | | expects to detect VPWR | | | | | voltage coming through | | | | | the fuel pump relay | | | | | coil to the FP | | | | | circuit). | | | |________________________|________________________|________________________|________________________| | P0231 - Fuel Pump | NOTE: For natural gas | * Open B+ circuit to | During KOEO self-test, | | Secondary Circuit Low | applications, the | the fuel pump relay | the PCM will command | | | following description | * Open FP PWR circuit | the fuel pump ON so | | | applies to the fuel | between the fuel | this test can be | | | shutoff valve monitor | pump relay and its | performed. | | | (FSVM) and the fuel | connection to the | | | | shutoff valve power | FPM circuit | | | | (FSV PWR) circuits. | * Damaged fuel pump | | | | The PCM monitors the | relay | | | | fuel pump monitor | * Damaged PCM (engine | | | | (FPM) circuit. The | will start) | | | | test fails if the PCM | * For 4.6L Mustang, | | | | commands the fuel pump | open FP PWR circuit | | | | ON and B+ voltage is | from low speed fuel | | | | not detected on the | pump relay, through | | | | FPM circuit. | resistor to FPM | | | | | splice (engine will | | | | | start) | | | | | * For 5.4L SC | | | | | Lightning, damaged | | | | | IFS switch, IFS | | | | | switch relay, or | | | | | concern with | | | | | related circuits. | | |________________________|________________________|________________________|________________________| | P0232 - Fuel Pump | NOTE: For natural gas | * Inertia fuel | P0232 can be set if | | Secondary Circuit High | applications, the | shutoff (IFS) | the fuel pump circuit | | | following description | switch not reset or | is activated when the | | | applies to the fuel | electrically open | PCM expected the | | | shutoff valve monitor | * Open circuit | circuit to be off | | | (FSVM) and the fuel | between the fuel | (i.e. fuel system test | | | shutoff valve power | pump and the FPM | or prime procedure). | | | (FSV PWR) circuits. | connection to the | * EDIS system failure | | | The PCM monitors the | FP PWR circuit | * High speed fuel | | | fuel pump monitor | * Poor fuel pump | pump failure | | | (FPM) circuit. This | ground | * Engine speed | | | test fails when the | * Fuel pump | exceeds calibrated | | | PCM detects voltage on | electrically open | threshold | | | the FPM circuit while | * Fuel pump secondary | * Transmission | | | the fuel pump is | circuits short to | electronic pressure | | | commanded OFF. The FPM | power | control (EPC) | | | circuit is wired to a | * Fuel pump relay | solenoid failure | | | pull-up voltage inside | contacts always | * Cylinder head | | | the PCM. The FPM | closed | temperature (CHT) | | | circuit will go high | * Open FPM circuit | exceed calibrated | | | if, with the key ON | between PCM and | limit | | | and the fuel pump | connection to FP | | | | commanded OFF, the FPM | PWR circuit | | | | /FP PWR circuit loses | * Damaged low speed | | | | its path to ground | fuel pump relay or | | | | through the fuel pump. | concern with | | | | The FPM circuit will | related circuits | | | | also go high if the | (if equipped). | | | | FPM/FP PWR circuit is | * Damaged PCM | | | | shorted to power. | | | |________________________|________________________|________________________|________________________| | P0234 - Supercharger | The PCM disables | * Brake torque (brake | Check for other | | Overboost Condition | (bypasses) the | on and throttle at | diagnostic trouble | | | supercharger boost and | wide open) | codes accompanying the | | | sets a diagnostic | * Transmission oil | P0234 or check | | | trouble code (DTC) to | temperature (TOT) | appropriate and | | | keep from damaging the | exceeds calibrated | available PIDs related | | | powertrain (engine or | threshold | to above possible | | | transmission) during | * Engine over | causes. | | | potential harmful | temperature | | | | operating conditions. | * Ignition misfire | | | | | exceeds calibrated | | | | | threshold | | | | | * Knock sensor (KS) | | | | | failure or knock | | | | | detected | | | | | * Low speed fuel pump | | | | | relay not switching | | |________________________|________________________|________________________|________________________| | P0243 - Supercharger | The PCM monitors the | * VPWR circuit open | Disconnect SCB | | (Boost) Bypass | supercharger (boost) | to SCB solenoid | solenoid. Connect test | | Solenoid Circuit | bypass (SCB) solenoid | * SCB solenoid | lamp to SCB solenoid | | Malfunction | circuit for an | circuit shorted to | harness connector. | | | electrical failure. | PWR GND or CHASSIS | Cycle SCB driver in | | | The test fails when | GND | PCM by Output Test | | | the signal moves | * Damaged SCB | Mode. Test lamp cycle | | | outside the minimum or | solenoid | on and off - SCB | | | maximum allowable | * SCB solenoid | solenoid is suspect. | | | calibrated parameters | circuit open | Test lamp always on - | | | for a specified SCB | * SCB solenoid | SCB signal short in | | | solenoid duty cycle | circuit shorted to | harness or PCM. Test | | | (100% or 0%) by PCM | VPWR | always off - SCB | | | command. | * Damaged PCM | signal or VPWR open in | | | | | harness or PCM. | |________________________|________________________|________________________|________________________| | P0298 - Engine Oil | Indicates the Engine | * Very high engine | Engine operating in | | Over Temperature | Oil Temperature | rpm for extended | high rpm range, due to | | Condition | Protection strategy in | period of time. | improper gear | | | the PCM has been | * Over-heating | selection. May cause | | | activated. This will | condition. | Lack/Loss of Power or | | | temporarily prohibit | * Malfunction EOT | Surge customer | | | high engine speed | sensor or circuit | concern. | | | operation by disabling | (vehicles w/EOT | | | | injectors, therefore | sensor). | | | | reducing the risk of | * Base engine | | | | engine damage from | concerns. | | | | high engine oil | | | | | temperature. Note: On | | | | | engines which are | | | | | equipped with an oil | | | | | temperature sensor, | | | | | the PCM reads oil | | | | | temperature to | | | | | determine if it is | | | | | excessive. When an oil | | | | | temperature sensor is | | | | | not present, the PCM | | | | | uses an oil algorithm | | | | | to infer actual | | | | | temperature. Engine | | | | | shutdown strategy | | | | | function is the same | | | | | on vehicles with and | | | | | without oil | | | | | temperature sensors. | | | |________________________|________________________|________________________|________________________| </PRE>
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Roush Performance Suspension Nautilus Performance Big Brake Kit Nautilus Performance Turbo Kit ...with all the trimmings! :D Last edited by Rikenbomb; 02-02-2008 at 04:27 PM. |
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12-03-2005, 03:44 PM
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#2 (permalink) |
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Got turbine on my mind
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Re: STICKY ME! DTC Descriptions
HTML Code:
<PRE>
| DTC | Description | Possible Causes | Diagnostic Aides |
|________________________|________________________|________________________|________________________|
| P0300 - Random Misfire | The random misfire DTC | * Camshaft position | |
| | indicates multiple | sensor (CMP) | |
| | cylinders are | * Low fuel: less than | |
| | misfiring or the PCM | 1/8 tank | |
| | cannot identify which | * Stuck open EGR | |
| | cylinder is misfiring. | valve | |
|________________________|________________________|________________________|________________________|
| P0301 through P0310 - | The misfire detection | * Ignition system | The MIL will blink |
| Misfire Detection | monitor is designed to | * Fuel injectors | once per second when a |
| Monitor | monitor engine misfire | * Running out of fuel | misfire is detected |
| | and identify the | * EVAP canister purge | severe enough to cause |
| | specific cylinder in | valve | catalyst damage. If |
| | which the misfire has | * Fuel pressure | the MIL is on steady |
| | occurred. Misfire is | * Evaporative | state, due to a |
| | defined as lack of | emission system | misfire, this will |
| | combustion in a | * Base engine | indicate the threshold |
| | cylinder due to | | for emissions was |
| | absence of spark, poor | | exceeded and cause the |
| | fuel metering, poor | | vehicle to fail an |
| | compression, or any | | inspection and |
| | other cause. | | maintenance tailpipe |
| | | | test. |
|________________________|________________________|________________________|________________________|
| P0320 - Ignition | The ignition engine | * Loose wires/ | The DTC indicates that |
| Engine Speed Input | speed sensor input | connectors. | two successive erratic |
| Circuit Malfunction | signal to PCM is | * Arcing secondary | PIP pulses occurred. |
| | continuously | ignition components | |
| | monitored. The test | (coil, wires and | |
| | fails when the signal | plugs) | |
| | indicates that two | * On board | |
| | successive erratic | transmitter (2-way | |
| | profile ignition | radio) | |
| | pickup (PIP) pulses | | |
| | have occurred. | | |
|________________________|________________________|________________________|________________________|
| P0325 - Knock Sensor 1 | | | |
| Circuit Malfunction | | | |
| (Bank 1) | | | |
|________________________|________________________|________________________|________________________|
| P0326 - Knock Sensor 1 | The knock sensor | * Knock sensor | A knock sensor voltage |
| Circuit Range/ | detects vibrations | circuit short to | greater than 0.5V with |
| Performance (Bank 1) | upon increase and | GND | the key ON and engine |
| | decrease in engine | * Knock sensor | OFF indicates a hard |
| | rpm. The knock sensor | circuit short to | fault. |
| | generates a voltage | PWR | |
| | based on this | * Knock sensor | |
| | vibration. Should this | circuit open | |
| | voltage go outside a | * Damaged knock | |
| | calibrated level a DTC | sensor | |
| | will set. | * Damaged PCM | |
|________________________|________________________|________________________|________________________|
| P0330 - Knock Sensor 2 | | | |
| Circuit Malfunction | | | |
| (Bank 2) | | | |
|________________________|________________________|________________________|________________________|
| P0331 - Knock Sensor 2 | The knock sensor | * Knock sensor | A knock sensor voltage |
| Circuit Range | detects vibration upon | circuit short to | greater than 0.5V with |
| /performance (Bank 2) | increase and decrease | GND | the key ON and engine |
| | in engine rpm. The | * Knock sensor | OFF indicates a hard |
| | knock sensor generates | circuit short to | fault. |
| | a voltage based on | PWR | |
| | this vibration. Should | * Damaged knock | |
| | this voltage go | sensor | |
| | outside a calibrated | * Damaged PCM | |
| | level a DTC will set. | * Knock sensor | |
| | | circuit open | |
|________________________|________________________|________________________|________________________|
| P0340 - Camshaft | The test fails when | * CMP circuit open | Harness routing, |
| Position (CMP) Sensor | the PCM can no longer | * CMP circuit short | harness alterations, |
| Circuit Malfunction | detect the signal from | to GND | improper shielding, or |
| | the CMP sensor. | * CMP circuit short | electrical |
| | | to PWR | interference from |
| | | * SIG RTN open (VR | other improperly |
| | | sensor) | functioning systems |
| | | * CMP GND open (Hall | may have intermittent |
| | | effect sensor) | impact on the CMP |
| | | * CMP misinstalled | signal. |
| | | (Hall effect | |
| | | sensor) | |
| | | * Damaged CMP sensor | |
| | | shielding | |
| | | * Damaged CMP sensor | |
| | | * Damaged PCM | |
|________________________|________________________|________________________|________________________|
| P0350 - Ignition Coil | Each ignition primary | * Open or short in | |
| (Undetermined) Primary | circuit is | Ignition START/RUN | |
| / Secondary Circuit | continuously | circuit | |
| Malfunction | monitored. The test | * Open coil driver | |
| | fails when the PCM | circuit | |
| | does not receive a | * Coil driver circuit | |
| | valid IDM pulse signal | shorted to ground | |
| | from the ignition | * Damaged coil | |
| | module (integrated in | * Damaged PCM | |
| | PCM). | * Coil driver circuit | |
| | | shorted to VPWR | |
|________________________|________________________|________________________|________________________|
| P0351 Through P0360 - | Each ignition primary | * Open or short in | |
| Ignition Coil A | circuit is | Ignition START/RUN | |
| through J Primary/ | continuously | circuit | |
| Secondary Circuit | monitored. The test | * Open coil driver | |
| Malfunction | fails when the PCM | circuit in harness | |
| | does not receive a | * Coil driver circuit | |
| | valid IDM pulse signal | shorted to ground | |
| | from the ignition | * Damaged coil | |
| | module (integrated in | * Damaged PCM | |
| | PCM). | * Coil driver circuit | |
| | | shorted to PWR | |
|________________________|________________________|________________________|________________________|
| P0401 - EGR Flow | The EGR system is | * Vacuum supply | Perform KOER self-test |
| Insufficient Detected | monitored during | * EGR valve stuck | and look for DTC P1408 |
| | steady state driving | closed | as an indication of a |
| | conditions while the | * EGR valve leaks | hard fault. If P1408 |
| | EGR is commanded on. | vacuum | is not present, look |
| | The test fails when | * EGR flow path | for contamination, |
| | the signal from the | restricted | restrictions, leaks, |
| | DPF EGR sensor | * EGRVR circuit | and intermittents. |
| | indicates that EGR | shorted to PWR | |
| | flow is less than the | * VREF open to DPF | |
| | desired minimum. | EGR sensor | |
| | | * DPF EGR sensor | |
| | | downstream hose off | |
| | | or plugged | |
| | | * EGRVR circuit open | |
| | | to PCM | |
| | | * VPWR open to EGRVR | |
| | | solenoid | |
| | | * DPF EGR sensor | |
| | | hoses both off | |
| | | * DPF EGR sensor | |
| | | hoses reversed | |
| | | * Damaged EGR orifice | |
| | | tube | |
| | | * Damaged EGRVR | |
| | | solenoid | |
| | | * Damaged PCM | |
|________________________|________________________|________________________|________________________|
| P0402 - EGR Flow | The EGR system is | * EGR valve stuck | A DPFEGR PID reading |
| Excessive Detected | monitored for | open | that is greater at |
| | undesired EGR flow | * Plugged EGR vacuum | idle than during key |
| | during idle. The EGR | regulator solenoid | ON and engine OFF by |
| | monitor looks at the | vent | 0.5 volt or a rough |
| | DPF EGR signal at idle | * Plugged EGR tube | engine idle, may |
| | and compares it to the | * Slow responding DPF | indicate a hard fault. |
| | stored signal measured | EGR sensor | |
| | during key ON and | * Damaged DPF EGR | |
| | engine OFF. The test | sensor | |
| | fails when the signal | * Improper vacuum | |
| | at idle is greater | hose connection | |
| | than at key ON engine | * Plugged vacuum | |
| | OFF by a calibrated | hoses | |
| | amount. | * EGRVR circuit | |
| | | shorted to ground | |
| | | * Damaged EGR vacuum | |
| | | regulator solenoid | |
| | | * Damaged PCM | |
|________________________|________________________|________________________|________________________|
| P0411 - Secondary Air | See DTC P1411 | | |
| Injection (AIR) system | | | |
| upstream flow | | | |
|________________________|________________________|________________________|________________________|
| P0412 - Secondary Air | The PCM attempts to | * AIR circuit open | The AIR circuit is |
| Injection System (AIR) | control when air is | * AIR bypass solenoid | normally held high |
| circuit malfunction | injected in the | fault | through the AIR bypass |
| | exhaust. The DTC | * Damaged PCM | solenoid and SSR when |
| | indicates a Secondary | * AIR circuit short | the output driver is |
| | Air injection system | to power | off. Therefore, a low |
| | AIR circuit fault. | * Solid state relay | AIR circuit indicates |
| | | fault | a driver is always on |
| | | * Damaged AIR pump | and a high circuit |
| | | | indicates an open in |
| | | | the PCM. |
|________________________|________________________|________________________|________________________|
| P0420 - Catalyst | Indicates Bank 1 | * Use of leaded fuel | - Compare HO2S |
| System Efficiency | catalyst system | * Damaged HO2S | upstream & |
| Below Threshold (Bank | efficiency is below | * Malfunctioning ECT | downstream switch |
| 1) | the acceptable | * High fuel pressure | rate. Under normal |
| | threshold | * Damaged exhaust | closed loop fuel |
| | | manifold | conditions, high |
| | | * Damaged catalytic | efficiency |
| | | converter | catalysts have |
| | | * Oil contamination | oxygen storage |
| | | * Cylinder misfiring | which makes the |
| | | * Downstream HO2S | switching frequency |
| | | wires improperly | of the downstream |
| | | connected | HO2S quite slow |
| | | * Damaged exhaust | compared to the |
| | | system pipe | upstream HO2S. As |
| | | * Damaged muffler | catalyst efficiency |
| | | /tailpipe assembly | deteriorates, its |
| | | * Retarded spark | ability to store |
| | | timing | oxygen declines and |
| | | | the downstream HO2S |
| | | | signal begins to |
| | | | switch more rapidly |
| | | | approaching the |
| | | | switching rate of |
| | | | the upstream HO2S. |
| | | | Once beyond an |
| | | | acceptable limit |
| | | | the DTC is set. |
|________________________|________________________|________________________|________________________|
| P0430 - Catalyst | Indicates Bank 2 | * Use of leaded fuel | Compare HO2S upstream |
| System Efficiency | catalyst system | * Damaged HO2S | & downstream switch |
| Below Threshold (Bank | efficiency is below | * Malfunctioning ECT | rate. Under normal |
| 2) | the acceptable | * High fuel pressure | closed loop fuel |
| | threshold. | * Damaged exhaust | conditions, high |
| | | manifold | efficiency catalysts |
| | | * Damaged catalytic | have oxygen storage |
| | | converter | which makes the |
| | | * Oil contamination | switching frequency of |
| | | * Cylinder misfiring | the downstream HO2S |
| | | * Downstream HO2S | quite slow compared to |
| | | wires improperly | the upstream HO2S. As |
| | | connected | catalyst efficiency |
| | | * Damaged exhaust | deteriorates, its |
| | | system pipe | ability to store |
| | | * Damaged muffler/ | oxygen declines and |
| | | tailpipe assembly | the downstream HO2S |
| | | * Retarded spark | signal begins to |
| | | timing | switch more rapidly |
| | | | approaching the |
| | | | switching rate of the |
| | | | upstream HO2S. Once |
| | | | beyond an acceptable |
| | | | limit the DTC is set. |
|________________________|________________________|________________________|________________________|
| P0442 - EVAP Control | The PCM monitors the | * After-market EVAP | |
| System Leak Detected | complete EVAP control | hardware (such as | |
| (Small Leak) | system for presence of | fuel filler cap) | |
| | a small fuel vapor | non-conforming to | |
| | leak. The system | required | |
| | failure occurs when a | specifications | |
| | fuel vapor leak from | * Small holes or cuts | |
| | an opening as small as | in fuel vapor hoses | |
| | 0.10 cm (0.04 inch) is | /tubes | |
| | detected by the EVAP | * Canister vent | |
| | running loss monitor | solenoid stays | |
| | test. | partially open on | |
| | | closed command | |
| | | * Damaged, cross | |
| | | -threaded or | |
| | | loosely installed | |
| | | fuel filler cap | |
| | | * Loose fuel vapor | |
| | | hose/tube | |
| | | connections to EVAP | |
| | | system components | |
| | | * EVAP system | |
| | | component seals | |
| | | leaking (EVAP | |
| | | canister purge | |
| | | valve, fuel tank | |
| | | pressure sensor, | |
| | | canister vent | |
| | | solenoid, fuel | |
| | | vapor control valve | |
| | | tube assembly or | |
| | | fuel vapor vent | |
| | | valve assembly) | |
|________________________|________________________|________________________|________________________|
| P0443 - EVAP Control | The PCM monitors the | * VPWR circuit open | Monitor EVAPPDC PID |
| System Canister Purge | EVAP canister purge | * EVAP canister purge | and voltage between |
| Valve Circuit | valve circuit for an | valve circuit | EVAP canister valve |
| Malfunction | electrical failure. | shorted to GND | signal and PWR GND in |
| | The test fails when | * Damaged EVAP | output test mode with |
| | the signal moves | canister purge | key ON engine OFF (or |
| | outside the minimum or | valve | in key ON engine |
| | maximum allowable | * EVAP canister purge | RUNNING mode). EVAPPDC |
| | calibrated parameters | valve circuit open | PID at 0% and voltage |
| | for a specified purge | * EVAP canister purge | less than 1.0 volts |
| | duty cycle by PCM | valve circuit | (or EVAPPDC PID at |
| | command. | shorted to VPWR | 100% and voltage |
| | | * Damaged PCM | greater than 0.5 |
| | | | volts) indicates a |
| | | | hard fault. |
|________________________|________________________|________________________|________________________|
| P0452 - FTP Sensor | The PCM monitors the | * Contamination | FTP V PID reading less |
| Circuit Low Voltage | EVAP control system | internal to FTP | than 0.22 volt with |
| Detected | FTP sensor input | sensor connector | key ON and engine OFF |
| | signal to the PCM. The | * Damaged PCM | or during any engine |
| | test fails when the | * FTP circuit shorted | operating mode |
| | signal average drops | to GND or SIG RTN | indicates a hard |
| | below a minimum | * Damaged FTP sensor | fault. |
| | allowable calibrated | | |
| | parameter. | | |
|________________________|________________________|________________________|________________________|
| P0453 - FTP Sensor | The PCM monitors the | * FTP circuit open | FTP V PID reading |
| Circuit High Voltage | EVAP control system | * VREF shorted to | greater than 4.50 |
| Detected | FTP sensor input | VPWR | volts with key ON and |
| | signal to the PCM. The | * Damaged PCM | engine OFF or during |
| | test fails when the | * FTP circuit shorted | any engine operating |
| | signal average jumps | to VREF or VPWR | mode indicates a hard |
| | above a minimum | * SIG RTN circuit | fault. |
| | allowable calibrated | open | |
| | parameter. | * Damaged FTP sensor | |
|________________________|________________________|________________________|________________________|
| P0455 - EVAP Control | The PCM monitors the | * After-market EVAP | Check for audible |
| System Leak Detected | complete EVAP control | hardware (such as | vacuum noise or |
| (No Purge Flow or | system for no purge | fuel filler cap) | significant fuel odor |
| Large Leak) | flow, the presence of | non-conforming to | in the engine |
| | a large fuel vapor | required | compartment or near |
| | leak or multiple small | specifications | the EVAP canister and |
| | fuel vapor leaks. The | * Disconnected or | fuel tank. |
| | system failure occurs | cracked fuel EVAP | |
| | when no purge flow | canister tube, EVAP | |
| | (attributed to fuel | canister purge | |
| | vapor blockages or | outlet tube or EVAP | |
| | restrictions), a large | return tube | |
| | fuel vapor leak or | * EVAP canister purge | |
| | multiple fuel vapor | valve stuck closed | |
| | leaks are detected by | * Damaged EVAP | |
| | the EVAP running loss | canister | |
| | monitor test with the | * Damaged or missing | |
| | engine running (but | fuel filler cap | |
| | not at idle). | * Insufficient fuel | |
| | | filler cap | |
| | | installation | |
| | | * Loose fuel vapor | |
| | | hose/tube | |
| | | connections to EVAP | |
| | | system components | |
| | | * Blockages or | |
| | | restrictions in | |
| | | fuel vapor hoses | |
| | | /tubes (items also | |
| | | listed under | |
| | | disconnections or | |
| | | cracks) | |
| | | * Fuel vapor control | |
| | | valve tube assembly | |
| | | or fuel vapor vent | |
| | | valve assembly | |
| | | blocked | |
| | | * Canister vent (CV) | |
| | | solenoid stuck open | |
| | | * Mechanically | |
| | | inoperative fuel | |
| | | tank pressure (FTP) | |
| | | sensor | |
|________________________|________________________|________________________|________________________|
| P0460 - Fuel Level | The PCM monitors the | * Empty fuel tank | Monitor FLI PID and |
| Sensor Circuit | fuel level input (FLI) | * Fuel pump (FP) | FLI V PID in key ON |
| Malfunction | circuit for electrical | module stuck open | engine RUNNING. FLI |
| | failure. The test |
