P2C5C code meaning
Cylinder 6 Fuel Injector B Offset Learning At Min Limit
Powertrain system Generic code P2Cxx codes Check engine light
What P2C5C means
P2C5C reports that the injector B offset for cylinder 6 has been learned down to its minimum. In practice the most telling check is the learned value itself: a scan tool that shows the offsets of all B injectors makes one outlier obvious. For an overdelivering valve a pressure-hold test of the rail after shut-off helps, since a dripping injector lets pressure fall faster and may leave a fuel smell or a long hot start. On in-line sixes cylinder 6 is the last one on the rail; on V6 engines its bank depends on the maker's numbering. No manufacturer documents P2C5C publicly; Volvo's injector B bulletin stops at cylinder 4. Under section (e)(6.2.2) of CARB's 13 CCR 1968.2 the exhausted correction counts as a fault.
P2C5C at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P2C5C
- Check engine light
- Often nothing else noticeable
- Long hot start or rough first seconds, possibly misfire on cylinder 6
- Possibly fuel smell or higher consumption
Common causes of P2C5C
- Most likelyInjector B of cylinder 6 leaking at the seat and adding fuel after closing
- PossibleReplacement injector of a different flow rating or not matched to the engine software
- PossibleOld learned values not reset after injector or software work
- Less likelySupply pressure on this injector set higher than the model assumes (regulator)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Fuel injector b cyl 6ECM
What each part of P2C5C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| C | Area: hybrid propulsion. |
| 5C | The exact fault in that area. |
What to do next
- Note P2C5C 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 P2C5C
What does P2C5C mean?
P2C5C means "Cylinder 6 Fuel Injector B Offset Learning At Min Limit". P2C5C reports that the injector B offset for cylinder 6 has been learned down to its minimum. It is a generic code, so it means the same on every make.
Is it safe to drive with P2C5C?
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 P2C5C fail an emissions test?
Yes, it can. P2C5C 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 P2C5C to fix?
Difficulty: medium. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P2C5C clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.