P0357 Code - Ignition Coil 7 Primary/Secondary Circuit Malfunction

What Does P0357 Mean?

The PCM has detected a fault in the primary or secondary circuit of one or more ignition coils. The majority of OBD-II equipped vehicles utilize a “coil on plug” system to provide ignition spark. In this system, an ignition coil is secured to the engine in a manner that allows for the use of a small spark plug wire or plug boot. Each ignition coil is electronically controlled by the PCM.

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What are the common causes of P0357 ?

To sum things up, the common causes for code P0357 are as follows:

• Faulty ignition coil
• Problem in the ignition coil circuit
• Problem with the PCM

How do you troubleshoot P0357 ?

Your mechanic may need to do any of the following:

• Replace damaged wires
• Replace damaged ignition coils

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