P0DFF
Battery Charger Coolant Control Valve Control Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Check and recharge the battery to ensure optimal power supply.
- Inspect and repair any faulty wiring or connectors related to the coolant control valve.
- Clean or replace the coolant control valve to improve its performance.
- Test and repair any control circuit issues that may be contributing to the high coolant control valve circuit reading.
- If necessary, replace the coolant control valve with a new one if all other options fail to resolve the issue.
Common causes
Most likely first
- Low battery voltage or a faulty battery charger
- Malfunctioning coolant control valve
- Faulty control circuit for the coolant control valve
- High resistance or an open circuit in the control circuit for the coolant control valve
- Faulty coolant temperature sensor
How to diagnose & fix
Work through it in order
- Poor perdormance and decreased power
- Overheating of the battery/charger
Read & clear P0DFF yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.