The second one is usually a voltage overload. However, if it is water damage, there’s no other choice but to replace the PCM. Micro-cracks in the circuit boards caused by vibrations and thermal stress can usually be repaired quite easily by a PCM re-manufacturer. The first is environmental issues, thermal stress, corrosion, or vibration can all cause a PCM to die. Basically, two main reasons are account for a bad PCM and knowing them may help to reduce the risk of the same problem from happening again. It monitors so many different systems and a bad PCM can lead to serious problems with almost every aspect of your vehicle.Įverything in the world has an existence cycle starting from emergence to death. This would include parts of the electrical system such as the charging process, communications with other on-board control modules, emission controls, and the transmission. When the PCM is not functioning correctly, the engine and many other functions that are controlled by the PCM will not function correctly either. It is responsible for the health running of your vehicle’s engine. The powertrain control module, otherwise known as the PCM or computer, is essentially your vehicle’s brain.
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