P2C57Cylinder 3 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
- P2C57 is the upper-limit counterpart for injector B on cylinder 3. A Ford patent on engines with two injector types explains why each injector needs its own learned offset: it is the time needed to overcome the inertia of the pintle and of the driver circuit, and it shifts with battery voltage and temperature. A valve that opens late, a corroded connector that drops voltage or deposits in the nozzle therefore push the correction toward its maximum. Volvo is the one maker with a public bulletin for this code (TJ 36016, model year 2022), where it usually appears without symptoms and is cured by a software update plus an adaptation reset in VIDA. CARB 1968.2 (e)(6.2.2) is the regulatory basis.
- What you may notice
- Check engine light
- Usually no change in how the car drives
- Possibly uneven idle or lean misfire on cylinder 3
- Likely causes
- LikelyEngine software (Volvo TJ 36016: update, then reset injector adaptations in VIDA)
- PossibleVarnish or deposits in injector B of cylinder 3, slow opening
- PossibleCorroded or loose connector, chafed wire or voltage drop at this injector
- RareAir leak at the intake runner of cylinder 3 (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 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.