P0E7E

Coolant Bypass Valve B Control Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Engine overheating
Long engine warm-up
Unstable operation of the cooling system
Check Engine Light Illuminates
Reduced interior heating efficiency

Causes

Coolant bypass valve malfunction
Open or short circuit in control circuit
Poor contact in valve connectors
Engine control unit malfunction
Mechanical valve jamming

How to Fix

Check the condition of the coolant bypass valve
Check the integrity of the control circuit and connectors
Measure valve resistance
Check control signals from the computer
Replace a faulty valve or repair a circuit

Related codes

P0E7D P0E7F P0E80