P0670 Code - Glow Plug Control Module Circuit Fault

What Does P0670 Mean?

Regarding the P0670 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. When you see P0670 engine fault code on your engine code reader this description will help you.

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obd code P0670	obd2 P0670	P0670 car code	diagnostic code P0670
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codigo P0670	codigo falla P0670	P0670 kody b??dów	codigo de falla P0670

What are the common causes of P0670 ?

• A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
• Faulty IMRC actuator relay (if equipped)
• A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.

How do you troubleshoot P0670 ?

Your mechanic may do any of the following:

• Change out the battery
• Replace damaged wires or connectors
• Repair the glow plug relay
• Replace the GPCM
• Replace the PCM (this is the least likely solution)

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