P232CCylinder 11 Fuel Injector A Offset Learning At Max Limit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P232C is the upper-limit partner of P232B for injector A in cylinder 11. The small-quantity learning has found that this injector needs far more energizing time than the nominal map to produce the expected torque pulse, and the stored correction has hit its maximum at one or more rail pressure levels. Typical reasons are coking, wear or a sticking needle, so the injector delivers too little or opens late. GM's 2018 diesel tables describe the logic for cylinders 1 to 8: every new learned value is checked, the saturation status is kept per pressure level in non-volatile memory, the code sets if any level is saturated, and it is Type B (MIL after two trips). CARB requires such a fault when a fuel feedback has run out of authority. Only twelve-cylinder diesels have a cylinder 11; no maker publishes P232C.
- What you may notice
- MIL on after two trips
- Rough idle or uneven running at low load
- Possibly harder starting or more smoke
- Likely causes
- LikelyInjector of cylinder 11 coked, worn or sticking (delivers too little)
- PossibleInjector correction code missing or wrong after replacement
- RarePoor fuel quality or contamination promoting deposits
- RareDisturbed crankshaft speed signal
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €0 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.