OBD-II code · Powertrain (generic, extended)
P2363 Glow Plug Module Control Module Power Circuit High
The voltage at the glow plug control module supply line is above the upper threshold. Indicates wiring or charging-system overvoltage condition.
Is it safe to drive with P2363?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- PossibleCharging system overvoltage
- PossibleWiring shorted to battery
- Less likelyConnector pins corroded - high contact resistance
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
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Glow Plug Control Module, Alternator
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.