P263F code meaning
Glow Plug Control Module 2 Over Temperature
Powertrain system Generic code P26xx codes Check engine light
What P263F means
P263F is reserved for engines with a second glow plug control module, for instance one per cylinder bank on large V engines; it reports that this second unit has exceeded its permitted internal temperature. No manufacturer documents P263F publicly, and the documented North American V8 diesels from Ford and GM manage all eight plugs with a single module, so they only use the module 1 code P263E. The logic would match that code: GM's L5P sets module 1 overheating above 123 °C during glowing, Ford's 6.7 L above 125 °C. CARB requires glow plugs to be monitored as one component. Likely triggers are high-current or shorted plugs on the bank served by module 2, extended glowing in severe cold, or an internal module fault. Cold starting suffers on one bank.
P263F 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 P263F
- Check engine light, glow lamp flashing
- Harder cold start, uneven running until warm
Common causes of P263F
- Most likelyHigh-current or shorted glow plugs on the bank served by module 2
- PossibleLong or repeated glow phases in severe cold
- PossibleInternal fault or poor cooling of glow plug module 2
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Glow plug module 2Glow plugs
What each part of P263F 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. |
| 3F | The exact fault in that area. |
What to do next
- Note P263F 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 P263F
What does P263F mean?
P263F means "Glow Plug Control Module 2 Over Temperature". P263F is reserved for engines with a second glow plug control module, for instance one per cylinder bank on large V engines; it reports that this second unit has exceeded its permitted internal temperature. It is a generic code, so it means the same on every make.
Is it safe to drive with P263F?
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 P263F fail an emissions test?
Yes, it can. P263F 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 P263F to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P263F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.