P263E code meaning
Glow Plug Control Module 1 Over Temperature
Powertrain system Generic code P26xx codes Check engine light
What P263E means
The first glow plug control module measures its own internal temperature and reports P263E when it runs too hot, since its power semiconductors carry tens of amps during glowing. GM's 6.6 L L5P Duramax tables set it at a module temperature above 123 °C while the plugs are commanded on and coolant is below 60 °C, type B. Ford's 2023 diesel summary for the 6.7 L and 3.0 L names more than 125 °C inside the module. FCA bulletin 09-009-15 for 2014-15 Ram ProMaster vans with the 3.0 L diesel lists P263E among glow plug codes caused by plugs lacking an internal O-ring and replaces all four plugs. Heat can also come from repeated or very long glow cycles in deep cold. Driver faults are P263C, a second module would report P263F.
P263E at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P263E
- Check engine light, glow lamp flashing
- Glowing cut short, hard cold starts
- White smoke after cold start
Common causes of P263E
- Most likelyDefective glow plugs drawing excess current (e.g. Ram ProMaster plugs without O-ring)
- PossibleRepeated start attempts or very long glow periods in severe cold
- PossibleInternal fault or poor heat dissipation of the glow plug module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Glow plug control moduleGlow plugs
What each part of P263E means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| 3E | The exact fault in that area. |
What to do next
- Note P263E and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P263E
What does P263E mean?
P263E means "Glow Plug Control Module 1 Over Temperature". The first glow plug control module measures its own internal temperature and reports P263E when it runs too hot, since its power semiconductors carry tens of amps during glowing. It is a generic code, so it means the same on every make.
Is it safe to drive with P263E?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P263E fail an emissions test?
Yes, it can. P263E is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P263E to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P263E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.