P2A1CInjection Pump Fuel Metering Control E Low (Cam/Rotor/Injector)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2A1C is set when the drive circuit of the fifth metering element, E, reads below its permitted range. On solenoid-operated pump valves and unit injectors, a wire grounded against the engine block, water in a connector or a broken lead on the ground-switched side are typical. Because only a few injection layouts have five or more separately controlled elements, the code is rare, and no manufacturer documents it publicly. California's comprehensive component monitoring demands checking every such output for breaks and for values outside its range. Saab's two-valve V6 diesel pump of 2002 gives an analogy: a grounded or open common supply (P0258) restricts fuel quantity and rail pressure. Element E's high-side and functional faults are P2A1D and P2A1B.
- What you may notice
- Check engine light on
- Reduced power or limp mode
- Rough running
- Likely causes
- LikelyWire of element E rubbing on the engine block and grounded
- PossibleMoisture or corrosion in the connector of element E
- PossibleBroken lead on the ground-switched side
- 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: €60 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.