Technical Definition:
(Cylinder No.11) Glow Plug Circuit / Open
Trouble Code: P0681
Address: 0x0681
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits
Address: 0x0681
System: Powertrain
Subsystem: Computer and Auxiliary Output Circuits
Technical Description:
Possible Causes:
- Faulty cylinder #11 glow plug
- Open or shorted glow plug circuit
- Damaged wiring connector
- Faulty glow plug control module
Possible Symptoms:
- The engine will be hard to start or may not start at all in cold weather or when its been sitting long enough for the block to cool.
- Lack of power until the engine heats up sufficiently.
- Engine may miss due to the colder than normal cylinder head temperature
- Engine may hesitate when accelerating
- No pre-heat period, or in other words the preheat light does not go off.
Cylinder 11 Glow Plug Circuit Fault
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Faulty cylinder #11 glow plug
– Cylinder #11 glow plug harness is open or shroted
– Cylinder #11 glow plug circuit poor electrical connection
– Faulty glow plug module