TorqueMech OBD Code Guide
P0679 - Cylinder 9 Glow Plug Circuit
The ECM detected a fault in glow plug circuit for cylinder 9.
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Code Overview
The ECM detected a fault in glow plug circuit for cylinder 9.
Common Causes
- Failed glow plug on cylinder 9
- Damaged wiring or connector at cylinder 9 glow plug
- Glow plug control module or power-supply issue
Diagnostic Steps
- Inspect glow plug 9 wiring and connector condition
- Check resistance and power feed to the glow plug circuit
- Look for fuse, relay, or module faults before replacing parts
Related OBD Codes
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Next Steps
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