P26C1

Engine Coolant Bypass Valve D Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine temperature
Engine overheating
Reduced engine efficiency
Check Engine Light Illuminates
Increased fuel consumption

Causes

Coolant bypass valve malfunction
Valve control circuit problems
Cooling system clogged
Coolant temperature sensor malfunction
Engine control unit software error

How to Fix

Check the condition of the coolant bypass valve
Diagnose the electrical valve control circuit
Clear the cooling system of possible blockages
Check and, if necessary, replace the coolant temperature sensor
Update engine control unit software

Related codes

P26C0 P26C2 P0128