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P0606 is a diagnostic trouble code (DTC) for "PCM Processor Fault". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
PCM Processor Fault
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. The PCM is responsible for monitoring every aspect of the vehicle’s engine and electrical system.
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. 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.
Retrieves freeze frame data using an OBD-II scanner. 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.
Visually inspects the wiring and connectors that lead to the PCM for breaks, frayed wiring, and corroded connectors.
Retests the system after repairing or replacing damaged wires or connectors. Most likely, the PCM will need to be replaced and/or reprogrammed.
Checks with the dealer to see if there are any recalls or if the PCM can be replaced under an emissions warranty.
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.
However, some of the symptoms are the same as symptoms that would be present for mechanical problems. As a result, it is common that ignition system and/or fuel system components are repaired in error.
The PCM monitors and controls the vehicle’s engine and electrical system. The vehicle will not be able to function without a PCM that is operating properly. For this reason, this code may very well be considered one of the most serious codes.
It is important to remember that symptoms of a faulty PCM can be the same symptoms of a faulty mechanical system. The P0606 diagnostic trouble code is simple and straightforward. However, replacing or reprogramming the PCM may need to be done at the dealership.
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