OBD Code P0683

Glow Plug Control Module to PCM Communication Circuit

What’s mean?

OBD2 Code P0683 Definition:
The Engine Control Module (ECM) has detected a communication fault with the Glow Plug Control Module (GPCM) circuit

Symptoms

Possible sumptoms of P0683
– Engine Light ON (or Service Engine Soon Warning Light) – Lack/Loss of Power – The engine may be harder to start – Engine hesitation

Possible Causes

Possible causes of P0683
– Control line open circuit – Control line short to ground or power – Faulty GPCM – ECM fault

Possible Solutions