Powertrain
generic / SAE
P068F
Cylinder 8 Glow Plug Control Circuit High
The control line for the glow plug on cylinder 8 is open or shorted to supply - the plug cannot be heated.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number6 / 8F
Possible causes
- Open in plug or wiring high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Symptoms
- Glow plug warning light on (often orange coil symbol)
- Hard cold start or no start in cold weather
- White smoke from exhaust during warm-up
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 60–250 €
- Estimated time: 0.4–1.4 h
- Component: glow plug cyl 8
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012