P0600 Defective PCM (Power Train Control Module), Defective PCM data bus wiring/connections, Defective PCM data bus ground circuit(s), Defective PCM or other control module controlled output devices, Defective CAN bus communication

---------------------------P0600 is a generic OBD-II code that indicates a problem with the communication between the PCM (Powertrain Control Module) and other control modules, such as the transmission control module, ABS module, or body control module. The following are some possible causes of P0600:

Defective PCM (Powertrain Control Module)

Defective PCM data bus wiring/connections

Defective PCM data bus ground circuit(s)

Defective PCM or other control module controlled output devices

Defective CAN bus communication

To solve the problem, it's recommended to perform the following steps:

Check for any other related codes and diagnose them first, as they may be contributing to the P0600 code.

Inspect the PCM data bus wiring and connections for any damage or corrosion and repair as necessary.

Inspect the PCM data bus ground circuits for any damage or corrosion and repair as necessary.

Inspect all control module output devices that are controlled by the PCM for proper operation and repair or replace as necessary.

Check the CAN bus communication using a diagnostic scanner and repair any issues found. If the CAN bus is damaged, it may need to be replaced.

If none of the above steps resolve the issue, it may be necessary to replace the PCM. However, this should be considered as a last resort, as it can be an expensive repair.