P0680 Code - Cylinder 10 Glow Plug Circuit Fault

What Does P0680 Mean?

The glow plug system is used to assist in providing the heat required to begin combustion during cold engine temperatures. The glow plugs are heated before and during cranking, as well as initial engine operation. The engine control module (ECM) controls the glow plug ON times by monitoring coolant temperature and glow plug voltage. The California Glow Plug system has eight individual glow plug supply circuits between the controller and the glow plugs. If the feedback voltage from the controller to the ECM is not within range, the ECM sets the OBDII code.

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What are the common causes of P0680 ?

• An air leak forward of the DPF will change the sensor readings resulting in the code
• Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
• Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

How do you troubleshoot P0680 ?

Several repairs can fix a P0680 trouble code and include:
Repair or replace any damaged, corroded, or loose wiring, connectors, and harnesses
Replace damaged or broken glow plug for cylinder 10
Replace any blown fuses and repair any shorts
Replace the glow plug relay
Repair or replace any bent or damaged pins in electrical connectors
Clear all codes, test-drive the vehicle, and rescan to see if any codes reappear

Searches related to P0680 Code - Cylinder 10 Glow Plug Circuit Fault

• P0680
• P0681