Hey everyone!
-2006 LQ4 6.0 DBW, Manual trans, no VSS hooked up
Engine, Pedal, TAC, TB and Wiring all from same donor vehicle.
Finally able to drive, but getting an intermittent P2135 (A/B voltage correlation error)
When this happens the pedal goes dead (I know this is by design), and the idle sits a touch high (~1400 rpm).
Once I clear the code the pedal works again, and the idle comes back to the base setpoint (675 rpm at operating temp).
I see in the log where there are some weird flat spots in the O2's when the pedal dies.
Problem is, I can't figure out why it's not consistent... If I stay at zero throttle it won't throw the code, if I stay above say 70% throttle and high RPM it won't throw the code...
Is there anything in the tune that could cause this, or is the only possibility a faulty TAC/TB/Pedal?
I've checked the wiring for continuity and ohms and everything has exactly the same resistance... I don't believe it's a wiring issue.
I don't remember having this issue before I cleaned the MAF (yes I used honest to goodness MAF spray cleaner). I let everything dry before I put it back together and fired it up.
Do I need to check the TPS? Can I relearn the TPS? Should I pull the TB and clean the crap out of it?
PedalProblems.hpl
6.0_Working_3-14-2024.hpt
P2135_Section.png