PCM wires that are broken, corroded, and/or frayed.If the result of this self-check indicates that there is a processor fault in the the PCM, it will store the P0606 diagnostic trouble code. When the vehicle is started up, the PCM will perform a self-check to make sure that all of the engine's components are operating properly. The PCM is responsible for monitoring every aspect of the vehicle's engine and electrical system. The Powertrain Control Module is sometimes referred to as the Power Control Module, or the Engine Control Module (ECM) all of these names mean the same thing. P0606 OBD-II Trouble Code: PCM Processor Fault Faulty fuel pump control module (if applicable) Fuel pump circuit poor electrical connection P0627 - Fuel Pump 'A' Control Circuit/Open P0629 means there is an issue with the "A" control circuit in the fuel pump often due too bad connectors/wires or a defective CAN bus You have to fix the issue first, and then you clear the code using and OBD11 scanner.
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