Causes and Fixes P0600 Code: Serial Communication Link Malfunction

How to fix P0600 Code: Serial Communication Link Malfunction A P0600 code is set when the main computer (ECM/PCM) detects communication issues between one or more computer modules. The CAN (Controller Area Network) is a protocol that allows the ECM, PCM, TCM, ABS and other computer modules to communicate with each other. Since a P0600 code can require troubleshooting a vehicle's computer modules and wiring, it can sometimes be difficult to diagnose. Possible Causes of a P0600 Code: Issues with Power Source (Battery - Terminals - Alternator) Blown Fuse (Check Computer Related Fuses ECM/PCM/ECU/TCM ) Wiring Harness Open or Short (Check Connections) Computer Module Failure (ECM - PCM - TCM - ABS) By using this information, the user assumes all risks of use.