P2C61Cylinder 8 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
- P2C61 closes the series: injector B of cylinder 8 has driven its learned offset into the ceiling, so this valve stays short of fuel despite the longest correction allowed. Because a weak supply pump or low rail pressure would starve every injector of the same set, a Max code on a single cylinder narrows the search to that valve, its wiring or the air path of that cylinder. A lean system B trim on bank 2 (P2BF2) fits the picture on most V8 numbering schemes. Ford's published OBD summaries for the V8 with both injection types omit P2C61, and no other manufacturer documents it; Volvo's bulletin for the Max codes stops at cylinder 4. California's OBD rule (CARB 1968.2, section (e)(6.2.2)) makes an adaptation without remaining range a reportable fault.
- What you may notice
- Check engine light
- Often nothing else noticeable
- Possibly uneven idle or lean misfire on cylinder 8
- Likely causes
- LikelyVarnish or deposits in injector B of cylinder 8, 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 8 (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.