P26BF

Engine Coolant Bypass Valve D Control Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Unstable engine temperature
Reduced cooling system efficiency
Increased fuel consumption
Loss of engine power

Causes

Short circuit in valve control circuit
Coolant bypass valve malfunction
Problems with the wiring harness or connectors
Engine control unit malfunction
Corroded or damaged electrical contacts

How to Fix

Check valve control circuit integrity
Check valve resistance and operation
Inspect the wiring harness and connectors for damage.
Check the engine control unit for errors
Replace the coolant bypass valve if necessary

Related codes

P26BE P26C0 P26C1