What could be causing this?

[venom413]

Hey, I just got a error code P0401 (EGR Insufficient Detected) and P0175 (Rich Bank 2) What do you think could be causing this? Ever since I have got the code it has been bucking starting out and sometimes goin down the road when it goes into overdrive (around 60kilometer/hr) on my 2001 V6 ATX. It basically hold's the throttle around 1500-2000 while going down the street. It doesn't happen all the time but enough to be annoying. I just got a superchip to fix it being so rich and now I get a rich in bank 2, so I don't know what's up?

[painteddemon]

what do u have? i have a 99 atx i4 and mine did that right before the vct colonoid(variable cam timeing colonoid) went out on me.

[painteddemon]

oh and i forgot to mention my timeing belt and the main pully went with it to. and the vct colonoid is a mioghty expencive part

[venom413]

I have a 2001 V6 ATX

[ov3n]

bad DPFE sensor.