OBD Guide

P26C2

Engine Coolant Bypass Valve D Stuck Closed

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Engine overheating
  • Unstable engine operation
  • Increased fuel consumption
  • Check Engine light comes on

Causes

  • Mechanical valve sticking
  • Valve electrical circuit problems
  • Valve contamination
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check valve electrical circuit
  2. Clean or replace valve
  3. Check the operation of the engine control unit
  4. Replace the coolant bypass valve if necessary

Related codes

Error P26C2 by Vehicle Brand