P0231
Fuel Pump Secondary Circuit Low
2019-2019 Buick Enclave 3.6L V6
High SeverityPowertrainGeneric (SAE)
The 2019 Buick Enclave is equipped with a 3.6L V6 engine. Below you'll find detailed p0231 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Low voltage in the fuel pump secondary (output) circuit.
Symptoms
- Engine stalling
- No start
- Loss of power at high RPM
Common Causes
- Fuel pump failing
- Corroded connector
- High resistance wiring
- Weak battery during cranking
Diagnostic Steps
- Test voltage at pump connector
- Check connector
- Measure current draw
Repair Notes
Replace fuel pump 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
P0231 on Other Vehicles
Common Questions
What does code P0231 mean on a 2019-2019 Buick Enclave?
P0231 stands for "Fuel Pump Secondary Circuit Low". Low voltage in the fuel pump secondary (output) circuit.
What are the symptoms of P0231 on a Buick Enclave?
Common symptoms of P0231 include: Engine stalling, No start, Loss of power at high RPM.
What causes P0231 on a 2019-2019 Buick Enclave?
Common causes of P0231 include: Fuel pump failing, Corroded connector, High resistance wiring, Weak battery during cranking.
Last updated: March 2026