P263C code meaning
Glow Plug Control Driver Performance
Powertrain system Generic code P26xx codes Check engine light
What P263C means
Modern diesel glow systems switch each plug through a semiconductor driver inside a glow plug control module (GPCM). P263C reports that such a driver does not behave as commanded. Ford's 6.7 L and 3.0 L Power Stroke GPCM talks to the engine module over a private CAN bus and flags any internal output, whether it serves the plugs, the DEF heaters or a relay, that fails to switch or overheats for more than 1 s; Ford's 2013 summary prints the code with a typo as P26C3. GM's 6.6 L L5P files comparable driver faults under P064C instead. Separate codes exist for the module as a whole (P064C, P06E5), its overheating (P263E) and open plugs (P0671 ff.). CARB counts all glow plugs as one monitored component. Expect slow cold starts and white smoke.
P263C 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 P263C
- Check engine light, glow indicator may flash
- Hard or long cranking when cold
- White smoke and rough running after a cold start
Common causes of P263C
- Most likelyOutput stage inside the glow plug control module failed
- PossibleGlow plug or plug wire with short, overloading the driver
- Less likelyPoor GPCM power feed or ground causing erratic switching
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 P263C 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. |
| 3C | The exact fault in that area. |
What to do next
- Note P263C 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 P263C
What does P263C mean?
P263C means "Glow Plug Control Driver Performance". Modern diesel glow systems switch each plug through a semiconductor driver inside a glow plug control module (GPCM). It is a generic code, so it means the same on every make.
Is it safe to drive with P263C?
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 P263C fail an emissions test?
Yes, it can. P263C 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 P263C to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P263C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.