Powertrain
generic / SAE
P052F
Glow Plug Control Module 1 System Voltage
The first glow plug control module reports its supply voltage outside the calibrated window - either too low to drive the plugs to full temperature or too high, risking damage. Affects diesel cold-start time and white-smoke emissions.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 2F
Possible causes
- Supply voltage low high
- Supply relay contact high resistance medium
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
- Estimated cost: 120–450 €
- Estimated time: 0.6–2 h
- Component: glow plug control module 1
- Component: glow plug supply relay
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012