P2B5C

Engine Coolant Flow Control Valve Supply Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Engine overheating
The engine takes a long time to warm up
Unstable engine temperature
Check engine light is on
Reduced cooling system efficiency

Causes

Open or short circuit in valve circuit
Coolant flow control valve malfunction
Poor contact in circuit connectors
Engine control unit malfunction
Wiring harness damage

How to Fix

Check the integrity of the valve power supply circuit
Check the condition of connectors and contacts
Check the functionality of the coolant flow control valve
Check the output signals of the control unit
Replace faulty components

Related codes

P2B5D P2B5B P2B5A