P0090
Fuel Pressure Regulator 1 Control Circuit
2008-2012 Audi A5 3.2L V6
Moderate SeverityPowertrainGeneric (SAE)
Description
The PCM detected a malfunction in the fuel pressure regulator control circuit.
Symptoms
- Check Engine Light
- Unstable fuel pressure
- Poor running
Common Causes
- Faulty regulator solenoid
- Wiring damage
- PCM failure
Diagnostic Steps
- Test solenoid resistance
- Check wiring
- Test PCM output
Repair Notes
Replace regulator or repair wiring.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0090 on Other Vehicles
Common Questions
What does code P0090 mean on a 2008-2012 Audi A5?
P0090 stands for "Fuel Pressure Regulator 1 Control Circuit". The PCM detected a malfunction in the fuel pressure regulator control circuit.
What are the symptoms of P0090 on a Audi A5?
Common symptoms of P0090 include: Check Engine Light, Unstable fuel pressure, Poor running.
What causes P0090 on a 2008-2012 Audi A5?
Common causes of P0090 include: Faulty regulator solenoid, Wiring damage, PCM failure.