P0CE4

Hybrid/EV Battery Pack Coolant Control Valve Position Sensor Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Reduced performance of the hybrid/electric system
Warning messages on the dashboard
Increased fuel consumption (for hybrids)
Reduced power or unstable operation
Battery pack overheating

Causes

Valve position sensor malfunction
Open or short circuit in the sensor circuit
Poor electrical connection
Cooling control valve malfunction
Problems with the battery management module

How to Fix

Check the integrity of the sensor circuit
Check connections and connectors
Test valve position sensor
Replace position sensor if necessary
Check the operation of the cooling control valve

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