Need help
#2
It's probably best to take it to a shop. P2138 means an invalid correlation between PPS #1 and #2. The APP sensor consists of two pedal position sensors which are basically potentiometers that return variable voltage levels to the ECM. The ECM then sanity-checks one input against the other. When it detects a sufficient difference between the two, it can't trust the calculated accelerator pedal angle and thus goes into limp mode. Just so you don't go throwing parts at it, the cause is not always the APP sensor itself.
#3
Administrator
you may want to try disconnecting the battery to clear the codes and reset the ECM and BCM and see what comes back...
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