To diagnose the problem, a mechanic will need to use a scan tool to determine *which* other module the PCM isn't communicating with. Potential culprits could include:
* Transmission Control Module (TCM): A common suspect.
* Body Control Module (BCM): Controls various body functions.
* Anti-lock Brake System (ABS) Module: Less common, but possible.
* Other ECUs: Depending on the vehicle's specific configuration.
The solution will vary depending on the identified module and the cause of the communication failure. This could range from replacing a faulty module, repairing wiring harnesses, or fixing a connector problem. Simply clearing the code won't solve the underlying issue; it will only temporarily mask the problem.
