![]() ![]() ![]() Repairing or replacing any broken and/or corroded connectors.Repairing or replacing any wires that are broken and/or frayed.For this reason, this code may very well be considered one of the most serious codes. The vehicle will not be able to function without a PCM that is operating properly. The PCM monitors and controls the vehicle’s engine and electrical system. As a result, it is common that ignition system and/or fuel system components are repaired in error. However, some of the symptoms are the same as symptoms that would be present for mechanical problems. The P0606 diagnostic trouble code is difficult to misdiagnose it is fairly straightforward, and is usually an indication that the PCM needs to be replaced and/or reprogrammed. Most likely, the PCM will need to be replaced and/or reprogrammed.Ĭhecks with the dealer to see if there are any recalls or if the PCM can be replaced under an emissions warranty.Ĭommon mistakes when diagnosing the P0606 code Retests the system after repairing or replacing damaged wires or connectors. Visually inspects the wiring and connectors that lead to the PCM for breaks, frayed wiring, and corroded connectors. Doing this will provide information as to when the code was set by the PCM, as well as what likely caused the code to be stored. Retrieves freeze frame data using an OBD-II scanner. How does a mechanic diagnose the P0606 code? Although rare, there may be no felt symptoms.Vehicle may experience misfiring symptoms.Faulty Controller Area Network (CAN) bus communication.Faulty PCM ground circuits and/or output devices.PCM connectors that are broken, corroded, and/or frayed.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. PCM Processor Fault What the P0606 code means ![]()
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