A faulty or malfunctioning transmission can trigger the check engine light for a handful of reasons, including things like an overheating gearbox or issues with the transmission control module (TCM).

The standard reading should be about 60 ohms. Check The PCM The ODB II diagnostic scanner is used to diagnose the engine control unit. The scan tool connects to the vehicle's diagnostic port. Once ...

A fix is now available for 2021 Cadillac CT5 sedans affected by an Engine Control Module (ECM) issue leading to non-reporting of catalytic converter faults.