P2A1BInjection Pump Fuel Metering Control E Range/Performance (Cam/Rotor/Injector)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2A1B reports that metering element E works electrically but its result is off: the pressure build-up or quantity attributed to it deviates from what was commanded, or its correction values sit at the limit. How a control module rates this is not published; rail pressure and fuel correction are the obvious inputs. No manufacturer documents P2A1B. Volvo and Mack use the matching range/performance code for B, D and F – three letters for the three pumping injectors of their 13 litre engines; E does not appear there. California's heavy-duty OBD rule requires detecting a fuel system that can no longer deliver the commanded quantity or pressure. Power is cut back, and a worn cam lobe, plunger or valve is a plausible cause.
- What you may notice
- Check engine light on
- Lack of power under load
- Longer cranking before start
- Likely causes
- LikelyWorn cam lobe, plunger or valve of metering element E
- PossibleInsufficient low-pressure supply or clogged filter
- PossibleLeak in the high-pressure circuit
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.