P022F
Charge Air Cooler Bypass Control B Circuit High
Turbo / charge air cooling
Generic OBD-II
Low
What it means
P022F means the ECM has detected an abnormally high voltage in the control circuit for the charge air cooler (intercooler) bypass valve "B". That valve routes intake air around or through the cooler to manage charge-air temperature. This is an electrical fault, not an engine failure, so the car keeps running — you may just lose some cooling efficiency under hard boost.
Low
Can I keep driving? Safe to keep driving — this is an electrical circuit fault on the intercooler bypass valve; at most you may notice slightly reduced performance under sustained hard boost.
Common symptoms
What you'll notice
- Check-engine light on
- Often no noticeable change in how the car drives
- Possible slight loss of performance or higher intake-air temperatures under prolonged boost
Common causes
Most likely first
- Open or short-to-voltage in the charge air cooler bypass valve B control circuitLikely
- Failed bypass valve or its actuatorCommon
- Corroded or loose connector at the valveCommon
- ECM output-driver fault (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and confirm the code is current.
- Inspect the bypass valve connector and wiring for an open or a short to power.
- Measure the valve/actuator resistance and compare it to specification.
- Replace the bypass valve if it is faulty, or repair the wiring.
- Clear the code and re-test.
FAQ
Quick answers
Is it safe to drive with P022F?+
Yes. This is a low-severity electrical fault on the charge-air-cooler bypass valve. The engine still runs normally; you may just lose a little cooling efficiency under heavy boost.
Can I just clear P022F?+
You can, but if the wiring or valve is faulty the circuit-high code will return. Repair the circuit to clear it for good.
Related codes
Often seen with P022F
Read & clear P022F yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX