Error code
OBD2 P0679
OBD2P0679
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Cylinder 9 Glow Plug Circuit.
Severity
moderateCan be driven, but performance may suffer and the engine might not start properly in cold conditions.
Summary
P0679 indicates an issue with the glow plug circuit in cylinder 9 of the engine. This code is related to the electrical system that controls the glow plugs.
Common Causes
- Poor wiring connection
- Faulty relay
- Glow plug control module failure
- Defective glow plug
- Engine Control Module (ECM) issue
Fixes
FAQ
What does P0679 mean?
P0679 indicates a malfunction in the glow plug circuit for cylinder 9, which can affect engine starting and performance.
How do I fix P0679?
Fixing P0679 typically involves checking and repairing wiring connections, replacing faulty relays or glow plugs, and possibly addressing issues with the ECM or glow plug control module.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P0600Serial Communication Link
- P0601Internal Control Module Memory Check Sum Error
- P0602Control Module Programming Error
- P0603Internal Control Module Keep Alive Memory (KAM) Error
- P0604Internal Control Module Random Access Memory (RAM) Error
- P0605Internal Control Module Read Only Memory (ROM) Error
- P0606ECM/PCM Processor
- P0607Control Module Performance
- P0608Control Module VSS Output 'A'
- P0609Control Module VSS Output 'B'
- P0610Control Module Vehicle Options Error
- P0611Fuel Injector Control Module Performance