OBD Guide

P2635

Fuel Pump A Low Flow/Performance

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • The engine stalls or does not start
  • Loss of power during acceleration
  • Unstable engine idling
  • Increased fuel consumption

Causes

  • Fuel pump malfunction
  • Clogged fuel filter
  • Problems with wiring or fuel pump relay
  • Fuel pump circuit low voltage
  • Fuel tank dirty

How to Fix

  1. Check the pressure in the fuel system
  2. Replace the fuel filter
  3. Check the condition of the wiring and fuel pump relay
  4. Check the voltage at the fuel pump
  5. If necessary, replace the fuel pump

Related codes

Error P2635 by Vehicle Brand