P 2121 Code

[doppx006]

I was sitting in my truck and I had it idleing around 1000 RPM's as I waited for a few minutes via DSG idle controller and my idle kicked down and I looked at the cluster and the check engine light came on, dealer scanned the computer and it said P 2121 but the diesel mechanic was sick, but another mech cleared the code for me. SHould I just wait and see if it comes back or should I try to get them to fix it, as my warranty is done in 5K miles unless that is covered under the chasis warranty. It sounds like after looking in my service manual and running a search on the website P 2121 just means that low voltage to the TPS.

 

[CumminsBu]

P2121 Pedal Position Sensor 1 Performance / Rationality

???

 

[doppx006]

Yea that is what it sounds like, but it drove fine so i dunno??

 

[rbattelle]

Something's wrong with your DSG. You need to check your wiring on it. If the wiring is okay but the code comes back I'd call DSG and tell them you think your unit has gone bad. Ask them if they can test it for you. I've found them to be of exceptional customer service...



-Ryan