P2B1D
Cylinder 7 Injection Pulse Offset Exceeded Learning Limit
The injection pulse offset adaptation for cylinder 7 exceeds the calibrated learning window. Injector aging or fuel pressure drift beyond compensation.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Injector worn beyond compensation rangeCommon
- Fuel rail pressure driftPossible
Parts involved
- Fuel Injector Cyl 7
- ECM
P2B1D is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.