OBD Guide

P261F

Coolant Pump A Control Circuit Stuck On

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–111 (est.)

Symptoms

  • Engine overheating
  • Increased fuel consumption
  • Unstable engine operation
  • Check Engine Light Is On
  • Coolant pump noise

Causes

  • Coolant pump malfunction
  • Problems with wiring or connectors
  • Pump relay fault
  • Problems with the engine control unit (ECU)
  • Short circuit in control circuit

How to Fix

  1. Check the coolant pump for faults
  2. Inspect wiring and connectors for damage
  3. Check pump relay
  4. Diagnose the engine control unit (ECU)
  5. Check control circuit for short circuit

Related codes

Error P261F by Vehicle Brand