P00F2 Humidity Sensor Circuit/Open

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.

Likely causes

Symptoms

• Check engine light on
• Usually no noticeable symptoms
• Slightly uneven torque or higher consumption possible

Repair estimate

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

Related codes

References: law.cornell.edu, gsi.ext.gm.com, static.nhtsa.gov.