P0191
Fuel Rail Pressure Sensor Circuit Range/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 p0191 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The fuel rail pressure sensor reading is out of expected range.
Symptoms
- Check Engine Light
- Engine surge
- Poor performance
Common Causes
- Sensor fault
- Fuel pressure issue
- Restricted fuel line
Diagnostic Steps
- Compare sensor to mechanical gauge
- Check fuel pump
- Inspect fuel lines
Repair Notes
Replace sensor or repair fuel system.
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
P0191 on Other Vehicles
Common Questions
What does code P0191 mean on a 2019-2019 Buick Enclave?
P0191 stands for "Fuel Rail Pressure Sensor Circuit Range/Performance". The fuel rail pressure sensor reading is out of expected range.
What are the symptoms of P0191 on a Buick Enclave?
Common symptoms of P0191 include: Check Engine Light, Engine surge, Poor performance.
What causes P0191 on a 2019-2019 Buick Enclave?
Common causes of P0191 include: Sensor fault, Fuel pressure issue, Restricted fuel line.
Last updated: March 2026