P0089
Fuel Pressure Regulator 1 Performance
2000-2003 Audi S6 4.2L V8
Moderate SeverityPowertrainGeneric (SAE)
Description
The fuel pressure regulator is not maintaining the commanded fuel pressure.
Symptoms
- Check Engine Light
- Fluctuating idle
- Hesitation
- Poor fuel economy
Common Causes
- Faulty fuel pressure regulator
- Vacuum line issue
- Fuel pump weak
- Restricted fuel supply
Diagnostic Steps
- Monitor fuel pressure at idle and under load
- Test vacuum line to regulator
- Check fuel pump output
- Inspect fuel lines
Repair Notes
Replace fuel pressure regulator.
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
P0089 on Other Vehicles
Common Questions
What does code P0089 mean on a 2000-2003 Audi S6?
P0089 stands for "Fuel Pressure Regulator 1 Performance". The fuel pressure regulator is not maintaining the commanded fuel pressure.
What are the symptoms of P0089 on a Audi S6?
Common symptoms of P0089 include: Check Engine Light, Fluctuating idle, Hesitation, Poor fuel economy.
What causes P0089 on a 2000-2003 Audi S6?
Common causes of P0089 include: Faulty fuel pressure regulator, Vacuum line issue, Fuel pump weak, Restricted fuel supply.