P2B6D

Engine Coolant Flow Control Valve Position Sensor Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Unstable engine temperature
Engine overheating
The engine takes a long time to warm up
Check Engine Light Is On
Reduced cooling system efficiency

Causes

Poor contact in the sensor connector
Open or short circuit in the sensor circuit
Valve position sensor malfunction
Mechanical failure of the coolant flow control valve
Corroded contacts or damaged wiring harness

How to Fix

Check the connection of the sensor connector
Check the integrity of the sensor circuit (open circuit, short circuit)
Check the resistance of the position sensor
Replace position sensor if necessary
Check the mechanical operation of the coolant valve

Related codes

P2B6C P2B6E P2B6F