P232BCylinder 11 Fuel Injector A Offset Learning At Min 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
- Common-rail diesels keep a small-quantity correction for every injector. During overrun fuel cut the module fires one injector alone with a tiny known amount (GM: about 1.5 mm³), judges the torque from crankshaft acceleration and records how much the energizing time has to change at each rail pressure level. P232B says this learned value for injector A of cylinder 11 has reached its lower bound at one or more pressure levels: the injector needs much less time than nominal, so it delivers too much or opens early. CARB demands a fault once such a feedback correction has used up its range. An eleventh cylinder means a V12 diesel; among passenger cars only Audi's Q7 V12 TDI, sold from 2008 to 2012, had one. No manufacturer documents P232B publicly; P232C is the upper limit.
- What you may notice
- Check engine light on
- Often no noticeable change; possibly louder combustion noise or rough idle
- Possibly smoke or higher fuel consumption
- Likely causes
- LikelyInjector of cylinder 11 leaking or delivering too much at small quantities
- PossibleInjector correction code not or wrongly entered after replacement
- RareDisturbed crankshaft speed signal falsifying the torque evaluation
- RareEngine software calibration issue
- 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.