P0177
Fuel Composition Sensor Circuit Range/Performance
2019-2019 Buick Enclave 3.6L V6
Low SeverityPowertrainGeneric (SAE)
The 2019 Buick Enclave is equipped with a 3.6L V6 engine. Below you'll find detailed p0177 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The fuel composition sensor reading is outside expected range.
Symptoms
- Check Engine Light
- Incorrect fueling
Common Causes
- Contaminated sensor
- Sensor calibration issue
- Mixed fuel types
Diagnostic Steps
- Compare sensor reading to known fuel type
- Test sensor output range
Repair Notes
Replace sensor.
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
P0177 on Other Vehicles
Common Questions
What does code P0177 mean on a 2019-2019 Buick Enclave?
P0177 stands for "Fuel Composition Sensor Circuit Range/Performance". The fuel composition sensor reading is outside expected range.
What are the symptoms of P0177 on a Buick Enclave?
Common symptoms of P0177 include: Check Engine Light, Incorrect fueling.
What causes P0177 on a 2019-2019 Buick Enclave?
Common causes of P0177 include: Contaminated sensor, Sensor calibration issue, Mixed fuel types.
Last updated: March 2026