Intake Air Humidity Sensor Circuit High Voltage
Table of contents
P00F5 BUICK Possible Causes
- Faulty Intake Air Humidity Sensor
- Intake Air Humidity Sensor harness is open or shorted
- Intake Air Humidity Sensor circuit poor electrical connection
How do I fix code P00F5 BUICK?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- The Intake Air Humidity Sensor is part of the 8-Pin Mass Air Flow, Humidity, BARO and Intake Air Temperature 1 and 2 Sensor.
Cost of diagnosing the P00F5 BUICK code
The cost of diagnosing the P00F5 BUICK code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P00F5 BUICK Description
The humidity sensor measures the ambient humidity of the air in the sensor bore. The signal varies with intake air humidity and is displayed by the scan tool as duty cycle %. The Powertrain Control Module (PCM) applies 5 V to the circuit. The signal circuit is shared by the humidity sensor and the Intake Air Temperature (IAT) sensor 2. Ignition voltage and ground circuits are also supplied to the multifunction intake air sensor’s internal circuits for these sensors: IAT sensor 2, Humidity sensor, and MAF sensor. The Diagnostic Trouble Code (DTC) will set when the PCM detects that the humidity sensor signal is greater than or equal to 95 % for greater than 5 s.