P0683
Powertrain Codes
P0683 - FORD - Glow Plug Module Control To ECM Communication Circuit Fault
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light) - Lack/Loss of Power - The engine may be harder to start - Engine hesitation
Possible Causes
- Control line open circuit - Control line short to ground or power - Faulty GPCM - ECM fault
Description
The Engine Control Module (ECM) has detected a communication fault with the Glow Plug Control Module (GPCM) circuit