P028E
Charge Air Cooler Cooling Fan Control Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Check the charge air cooler cooling fan for any damage or malfunction.
- Inspect the cooling fan control circuit for any loose or faulty connections.
- Test the charge air cooler cooling fan control module for proper functioning.
- Verify the voltage and ground signals at the cooling fan control module.
- If all else fails, consider replacing the charge air cooler cooling fan control module.
Common causes
Most likely first
- Faulty charge air cooler cooling fan motor
- Short circuit in the charge air cooler cooling fan control circuit
- Open circuit in the charge air cooler cooling fan control circuit
- Malfunctioning charge air cooler cooling fan relay
- Faulty engine control module (ECM)
How to diagnose & fix
Work through it in order
- Overheating of the charge air cooler
- Check engine light illuminates
- Decreased engine performance or power loss
- Increased fuel consumption
- Engine stalling or rough idle
Read & clear P028E yourself
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