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2017 MAZDA MAZDA3

2.0L I4FWDAUTOMATICgas
2 active safety recalls on this vehicle — view recalls
Repairs0Labor473Torque2473Fluid6DTC917Battery0Maintenance0Recalls2
P0231high severityPowertrain

Fuel Pump Secondary Circuit Low

on 2017 Mazda Mazda3 2.0L I4 · FWD

What this code means

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

  1. Test voltage at pump connector
  2. Check connector
  3. Measure current draw

Repair notes

Replace fuel pump or repair wiring.

Other Powertrain codes on this vehicle

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