Fault Code P0683
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0683
Glow Plug Control Module to PCM Communication Circuit
This code indicates a communication fault between the Glow Plug Control Module and the Powertrain Control Module (PCM) in diesel vehicles. This fault affects the function of the glow plugs and cold engine starting.
Part Details
Part Name
Glow Plug Control Module
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪400 - ₪1500
Engine Location
Engine compartment
Symptoms
- Hard starting of a cold engine (diesel)
- Check Engine Light on
- Glow plug warning light flashing
- Poor engine performance
Possible Causes
- 1Faulty Glow Plug Control Module
- 2Damaged wiring or short in the communication circuit
- 3Loose or corroded connector
- 4Problem with the vehicle's computer (PCM)
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