Hybrid/EV Battery Pack Coolant Control Valve Position Sensor Circuit

Common symptoms

What you'll notice

• Check and replace the coolant control valve position sensor if it is faulty.
• Inspect and repair any wiring or connections related to the coolant control valve position sensor.
• Check the coolant levels and ensure they are within the proper range.
• Flush and refill the hybrid/EV battery pack coolant system.
• If all else fails, consider replacing the hybrid/EV battery pack coolant control valve.

Common causes

Most likely first

1. Faulty coolant control valve
2. Malfunctioning position sensor
3. Wiring issue or connection problem in the circuit
4. Low coolant level or coolant leak in the hybrid/EV battery pack
5. Control unit or software issue

How to diagnose & fix

Work through it in order

1. Warning light illuminates on the dashboard
2. Battery overheating
3. Loss of power or reduced performance