The humidity sensor measures the relative humidity of the intake air; on documented vehicles it is built into the mass air flow sensor or a combined sensor. The engine control module uses the value, for example, to correct torque and in emission models. One documented design is capacitive and reports humidity as a pulsed signal with a duty cycle that the control module converts back. P00F2 reports an open or general circuit fault of the humidity sensor. No manufacturer description naming this exact code was found.
Medium severity. Can I keep driving?If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
Symptoms
- Check engine light on
- Usually no noticeable symptoms
- Slightly uneven torque or higher consumption possible
Most likely causes
- Connector or wire interrupted
- Sensor or combined air flow sensor faulty
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: easy
- It affects emissions.
What each character of P00F2 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- 0: Subsystem depends on the code range
- F2: Specific fault in that system
Frequently asked questions
Can I keep driving with code P00F2?
If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
What causes code P00F2?
The most common causes are: connector or wire interrupted; sensor or combined air flow sensor faulty.
Related codes
- P00F3Humidity Sensor Circuit Range/Performance
- P00F4Humidity Sensor Circuit Low
- P00F5Humidity Sensor Circuit High
- P00F6Humidity Sensor Circuit Intermittent/Erratic
Sources
- law.cornell.edu: 13 CCR 1968.2
- gsi.ext.gm.com: 18OBDG04 Engine Diagnostics
- static.nhtsa.gov: MC 10221397 9999
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.