P0231
Fuel Pump Secondary Circuit Low
2014-2021 Mazda Mazda6 2.5L I4 🇨🇦
High SeverityPowertrain
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 2014-2021 Mazda Mazda6?
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 Mazda Mazda6?
Common symptoms of P0231 include: Engine stalling, No start, Loss of power at high RPM.
What causes P0231 on a 2014-2021 Mazda Mazda6?
Common causes of P0231 include: Fuel pump failing, Corroded connector, High resistance wiring, Weak battery during cranking.