SuperDave4x4

Now I installed my gauges last wednesday and everything was fine 28psi of boost and FP was 12psi at idle and 5 at WOT(which sucks). Then the next day I cranked it up and FP was at 12 a idle then a mile down the road it dropped to 4psi and stays there. So I figure my LP was dying. Well I go out and check my truck for any trouble codes because my FP is at 4psi and was looking for fueling codes, but came up with a P0602 (ECM/PCM calibration/programming error) and a P0234 (Engine overboost condition, turbo boost limit exceeded). What could have caused this? I took my superchips off and reinstalled it a while back and checked for codes afterwards and came up with nothing. Any Ideas?

Clunk

SuperDave4X4,
If you have a boost elbow or something else that would let your turbo exceed the factory spec..I guess around 21psi and your tuner isn't plugged in , the high boost pressure the computer sees will set that code.
I'm sorry but I can't help with the P0602...I don't know what that is.

Did you know you can post a picture of Clifferd the Big Red Dodge at this site?

SuperDave4x4

Yeah I didnt even think about that because I do have a boost elbow.

And yes I know about the gallery, I just havent resized my pics yet.

SuperDave4x4

Any ideas....anyone??

crobtex

Did you disconnect the boost elbow and reset the codes?

RottnRam

P0602 (M) ECM Fueling Calibration Error ECM Internal fault condition detected.

SuperDave4x4

I know what the code means, I need to figure out what threw it. Could it be my dead lift pump throwing the code? I would think so..