P26A3

Engine Coolant Bypass Valve A Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine temperature
Increased fuel consumption
Reduced engine power
Check Engine Light Is On
Engine overheating in some operating modes

Causes

Coolant bypass valve malfunction
Problems with wiring to the valve
Valve dirty or stuck
Valve position sensor malfunction
Problems with the engine control unit

How to Fix

Check the condition of the coolant bypass valve
Check the integrity of wiring and connectors
Clean or replace valve if necessary
Check the operation of the valve position sensor
If necessary, reflash or replace the engine control unit

Related codes

P26A0 P26A1 P26A2