P1648-vw (TESTED)

Pull up the passenger-side carpet/sill panel, open the TCM plastic box, and look for water, condensation, or green corrosion on the pins.

Repairing broken CAN bus wires.

This is a communication error between ECUs, not necessarily a failed sensor. 1. Common Causes p1648-vw

Verify the ECM and TCM are receiving proper voltage and have good grounds. Pull up the passenger-side carpet/sill panel, open the