Causes and Fixes P0606 Code: ECM/PCM Processor

How to fix a P0606 Code: ECM/PCM Processor A P0606 Code is set when the computer ECM/PCM Unit has encountered an internal error. A P0606 code can be difficult to troubleshoot since the ECM/PCM may have failed. The problem can be narrowed down by verifying the power voltage to the PCM, a stable power source, and no other components causing an issue. Some scan tools will give a P0606 Code: Control Module Processor. Possible Causes of a P0606 Code: Bad Battery or Bad Connections Charging Issues Wiring - Open Short - Blown Fuse Bad Component such as Failed Sensor Bad Ground Bad PCM/ECM By using this information user assumes all risk of use.