P06F9
Glow Plug Control Module 2 System Voltage
Glow Plug Control Module 2 System Voltage: the control module has detected this fault condition. This affects diesel cold-start preheating.
Possible causes
- Supply voltage low high
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: medium
- DIY: possible
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