P0670 Volkswagen Glow Plug Control Module Circuit Fault
Possible causes
– Faulty Glow Plug Control Module (GPCM)
– GPCM harness is open or shorted
– GPCM circuit poor electrical connection
– Faulty Engine Control Module (ECM)
– GPCM harness is open or shorted
– GPCM circuit poor electrical connection
– Faulty Engine Control Module (ECM)
What about the obd code?
The Engine Control Module (ECM) has detected a fault on the Glow Plug Control Module (GPCM) control circuit
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Lack/Loss of Power
– The engine may be harder to start
– Engine hesitation
– Lack/Loss of Power
– The engine may be harder to start
– Engine hesitation
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