OBD
P0680
Cylinder 10 Glow Plug Circuit/Open
What it means
P0680 means Cylinder 10 Glow Plug Circuit/Open.
Check these first
- A failed glow plug in cylinder 10
- An open in the glow plug harness
- A bad or corroded glow plug connector
- A failed glow plug relay
- Low battery voltage
What to do next
- Test the cylinder 10 glow plug for an open
- Inspect the harness and connector
- Check the relay and its feed
- Measure voltage at the glow plug
- Replace the plug or relay as needed
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.