P00F5
Humidity Sensor Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Check and replace the humidity sensor
- Inspect and clean the wiring connections of the humidity sensor
Common causes
Most likely first
- Faulty humidity sensor
- Water or moisture intrusion in the humidity sensor circuit
- Corroded or damaged connectors or wiring in the humidity sensor circuit
- Faulty control module or ECM
- Sensor malfunction due to extreme weather conditions or exposure
How to diagnose & fix
Work through it in order
- Engine misfires or runs rough
- Decreased fuel efficiency
- Difficulty starting the vehicle
- Stalling or intermittent power loss
- Illuminated check engine light
Read & clear P00F5 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.