P2A21
Injection Pump Fuel Metering Control F High (Cam/Rotor/Injector)
The control signal for injection pump metering channel F is above the expected window. Wire shorted to B+ or actuator open.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Control wire shorted to B+Common
- Open metering actuatorPossible
Parts involved
- Injection Pump Metering F
- Injection Pump
- Wiring Harness
P2A21 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.