P1501high severityPowertrain
Fuel Pump Relay Circuit Short to Positive
on 2017 Audi A6 3.0L Supercharged V6 · FWD
What this code means
The ECU detected a short to positive voltage in the fuel pump relay control circuit. The fuel pump relay cannot be properly controlled, which may cause the fuel pump to run continuously or not at all.
Symptoms
- Check Engine Light
- Fuel pump may run continuously
- No-start condition if relay stuck open
- Fuel smell if pump runs with engine off
Common causes
- Wiring shorted to battery voltage
- Faulty fuel pump relay
- Relay socket corrosion
- ECU relay driver failure
Diagnostic steps
- Test fuel pump relay operation
- Check relay control circuit for shorts to power
- Inspect relay socket and wiring
- Test ECU relay output
- Swap relay with known-good unit
Repair notes
Replace the fuel pump relay and repair any shorted wiring.
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