P2C55
Cylinder 2 Fuel Injector B Offset Learning At Max Limit
The injector offset adaptation for fuel injector B on cylinder 2 has reached the maximum learning limit. Injector flow trends above nominal beyond compensation.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Common causes
Ordered by how often each turns out to be the cause.
- Injector leaking - increased flowCommon
- Local rail pressure drift highPossible
Parts involved
- Fuel Injector B Cyl 2
- ECM
P2C55 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.