P2B1BCylinder 6 Injection Pulse Offset Exceeded Learning 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
- P2B1B concerns injector 6. On Ford's 3.0 L V6 Power Stroke it is the last cylinder the zero-fuel monitor checks, on the 6.7 L V8 the sixth of eight. The code means the energising time at which injector 6 starts to deliver has moved too far from its stored target, beyond the learn limit. Ford TSB 25-2262 superseded TSB 23-2076 with newer PCM software: driving above 762 m could leave wrong learned values, the engine might idle slightly rough, and Ford states that driveability and durability are not affected. The procedure is reprogramming PCM and TCM and then resetting the minimum fuel mass adaptions. Mechanical causes remain possible, so a code that persists after reflash and reset calls for a contribution check (P0278) and a test of injector 6.
- What you may notice
- Malfunction indicator lamp on
- Slightly rough idle, driveability otherwise normal
- Likely causes
- LikelyPCM software learning wrong values at altitude (Ford TSB 25-2262)
- PossibleInjector 6 drifted by wear or deposits
- RareAdaptions not reset after an earlier repair
- 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: €80 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.