P2631 – Fuel Pump Control Circuit Low

Description

The ECM detects a low signal in the fuel pump control circuit.

Want to confirm the real cause of this fault code?

A high-quality OBD2 scanner gives you live data, fuel trims, sensor readings and freeze-frame information — exactly what you need to verify the root cause of this code with confidence.

View Recommended Scanners

Symptoms

  • Hard starting
  • Engine hesitation
  • Check engine light

Causes

  • Weak pump
  • Wiring short to ground
  • ECM issue

Diagnosis

  • Test pump
  • Inspect wiring
  • Check ECM

Repair

  • Replace pump
  • Repair wiring