P26A5

Engine Coolant Bypass Valve A Position Sensor Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Incorrect operation of the cooling system
Possible engine overheating
Reduced interior heating efficiency
Unstable engine temperature

Causes

Valve position sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in connectors
Mechanical failure of the bypass valve
Problems with the engine control unit

How to Fix

Check the integrity of the sensor circuit
Inspect connectors and contacts for corrosion
Check the functionality of the position sensor
Check the mechanical operation of the bypass valve
If necessary, replace the sensor or valve

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