P263F
Glow Plug Control Module 2 Over Temperature
The second glow plug control module reports over-temperature. Sustained current draw or insufficient cooling has driven the module above its rated temperature.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
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
Common causes
Ordered by how often each turns out to be the cause.
- One glow plug shorted to ground forces module overcurrentCommon
- Cooling air channel blocked by debrisPossible
Parts involved
- Glow Plug Module 2
- Glow Plugs
P263F is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.