P0089
Fuel Pressure Regulator 1 Performance
2019-2019 Buick Enclave 3.6L V6
Moderate SeverityPowertrainGeneric (SAE)
The 2019 Buick Enclave is equipped with a 3.6L V6 engine. Below you'll find detailed p0089 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
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 2019-2019 Buick Enclave?
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 Buick Enclave?
Common symptoms of P0089 include: Check Engine Light, Fluctuating idle, Hesitation, Poor fuel economy.
What causes P0089 on a 2019-2019 Buick Enclave?
Common causes of P0089 include: Faulty fuel pressure regulator, Vacuum line issue, Fuel pump weak, Restricted fuel supply.
Last updated: March 2026