P2C5DCylinder 6 Fuel Injector B 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
- P2C5D says injector B of cylinder 6 needs the largest learned offset allowed. Because the offset depends on how quickly the driver can energise the coil, electrical causes deserve the first look: a corroded or loose connector, chafed wiring or a supply voltage that sags on that injector lengthen the real opening delay. If a circuit code for the same valve (P21D4) is present, that comes first. Mechanical causes are deposits or a sticking pintle. On six- and eight-cylinder engines with port plus direct injection this valve is often under the intake manifold, which makes access costly. No maker documents P2C5D publicly; the only bulletin for the family, Volvo's TJ 36016, stops at cylinder 4. CARB 1968.2 (e)(6.2.2) applies.
- What you may notice
- Check engine light
- Often nothing else noticeable
- Possibly uneven idle or lean misfire on cylinder 6
- Likely causes
- LikelyVarnish or deposits in injector B of cylinder 6, slow opening
- PossibleCorroded or loose connector, chafed wire or voltage drop at this injector
- PossibleOld adaptation values left at the limit after a repair or software change
- RareAir leak at the intake runner of cylinder 6 (only where the learn uses exhaust oxygen)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.