P0680

Cylinder 10 Glow Plug Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$22–78 (est.)

Symptoms

Difficulty starting a multi-cylinder diesel engine at subzero temperatures
Check Engine Light
White smoke on cold start
Unstable engine operation after starting
The glow plug indicator is on

Causes

Burnt out glow plug cylinder 10
Broken power wire
Oxidation or damage to the connector
GPCM module malfunction
Wiring damage

How to Fix

Read OBD-II codes and capture data
Measure the resistance of the glow plug of cylinder 10 (standard: 0.5–2 Ohm)
Inspect the wiring and spark plug connector
Check supply voltage
Replace a faulty glow plug
If the error occurs again - GPCM diagnostics

Related codes

P0679 P0681 P0670