P0680 — Glow plug circuit problem on cylinder 10
The engine's control module detected a problem with the glow plug circuit on cylinder 10. Glow plugs help start diesel engines by heating the air in the cylinder. This code appears when the circuit is open, shorted, or the glow plug itself is faulty, causing starting or running issues especially in cold conditions.
Common causes
The cause is almost always one of a few things. Here they are — P0680 rarely comes from anything outside this list:
- Faulty glow plug on cylinder 10
- Damaged wiring or connector in glow plug circuit
- Blown fuse or relay for glow plugs
- Faulty glow plug control module
Where to start
In the order a sensible mechanic would work — the cheap checks first, the expensive replacements only after:
- Check and replace blown fuses or relays
- Inspect and repair damaged wiring/connectors
- Test and replace faulty glow plug on cylinder 10
- Check glow plug control module if problem persists
That is what holds for P0680 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.
Why TorqFix for your car?
Above is what the code means and why it appears. TorqFix goes further — it gives you specific procedures, torque values, wiring diagrams and pinouts for your exact engine, not generic steps for every car. Real workshop data (127,000+ diagrams, 10,000+ procedures), interpreted by AI in your language.
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Code breakdown
🔧 Related repair procedures
- AUDI: Checking ignition coils and output stages on vehicles with engine code "“BES”"
- AUDI: Checking ignition coils with output stages
- VW: Removing and installing ignition coils with final output stages, engine codes BRN, BRP and BTT
- VW: Removing and installing ignition coils with final output stages, engine codes BAN and BAP
- VW: Removing and installing ignition coils with output stage
- AUDI: Removing and installing ignition coil (cylinder 10)
- AUDI: Removing and installing ignition coils
- AUDI: Removing and installing ignition coils with output stages
- AUDI: Removing and installing ignition coils with output stages, cylinder bank 2 (left-side)
- VW: Checking ignition coils with output stage
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
The same code can mean different things on different makes. Match the meaning to your make before acting on it.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
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