P0E20
Hybrid/EV Battery Pack Coolant Control Valve A Control Circuit Driver Current/Temperature Too High
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace any damaged wiring or connectors related to the Hybrid/EV Battery Pack Coolant Control Valve
- Inspect and clean the Hybrid/EV Battery Pack Coolant Control Valve to ensure it is working properly
- Verify the functionality of the Control Circuit Driver and repair or replace if necessary
- Monitor and control the temperature of the Hybrid/EV Battery Pack to prevent it from reaching excessive levels
Common causes
Most likely first
- Faulty hybrid/EV battery pack coolant control valve
- Malfunctioning control circuit driver
- Overheating and high current in the hybrid/EV battery pack coolant control valve
- Excessive temperature in the hybrid/EV battery pack coolant control valve
- Issues with the temperature control system in the hybrid/EV battery pack coolant control valve
How to diagnose & fix
Work through it in order
- Overheating of the hybrid/EV battery pack
- Decreased overall performance or power loss
- Malfunctioning of the coolant control valve
- Illumination of the check engine light on the dashboard
- Poor fuel efficiency
Read & clear P0E20 yourself
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