I have read that it could be "throttle actuator" or "throttle valve control module". Then I read it could be "throttle body" or also the "j338" whatever the
h--l that is. Car idles low, surges at low rpm and hesitates as well, anyone have this problem with a successful fix? Thank you in advance for your help. I currently have the throttle body off and have cleaned it well.

 

Update: I read somewhere that the dealer needs to reprogram in order to cure this code. Has anyone heard of this or dealt with this problem before? Thanks

 

It doesn't look like you got any help here with your issue... did you get it solved? What was it?

I'm getting the same code, plus two others. (P1544 and P0123) in my 99 A6 Quattro wagon. The car runs fine after I clear the codes (I bought a $50 code reader at a parts store) and while the engine is cold. Once the engine is hot, the problems start again.

Let me know where you're at with yours. I'd like to solve this without throwing too many expensive parts at the car. Thanks!

 

I had the dealer reprogram the computer, fixed the hesitation and stumbling. Problem solved. I also noticed that the purge valve on the air box was going bad.

 

i have an 02 a4 1.8t w/ the cvt trans. i've been having the hesitation while accelerating from 1500 to 2000 rpms and then its fine. has new plugs/ coils. did the pulling of the maf sensor connector trick and it still drove like crap. didnt know if the n75 or diverter valve could be going bad? any suggestions would be greatful!!