P0251high severityPowertrain
Injection Pump Fuel Metering Control A (Cam/Rotor/Injector)
on 2009 Audi A3 2.0L TDI · FWD
What this code means
Malfunction in the diesel injection pump fuel metering control.
Symptoms
- Check Engine Light
- Rough running
- Excessive smoke
- Poor power
Common causes
- Injection pump failure
- Fuel metering valve stuck
- Wiring issue
- Contaminated fuel
Diagnostic steps
- Test fuel metering valve
- Check wiring
- Inspect injection pump
- Test fuel quality
Repair notes
Service or replace injection pump. Common in diesel engines.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1