AutoCodes.com | All About OBDII Engine Codes
AutoCodes - GMC - P00F4 GMC

P00F4 GMC Code - Intake Air Humidity Sensor Circuit Low Voltage

- Code Popularity: 7,819 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

What are the Possible Causes of the DTC P00F4 GMC?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Intake Air Humidity Sensor
  • Intake Air Humidity Sensor harness is open or shorted
  • Intake Air Humidity Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
⚠ Does your GMC have Safety Recalls? → Check here

How to Fix the DTC P00F4 GMC?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

The Intake Air Humidity Sensor is part of the Mass Air Flow Sensor, Humidity Sensor, BARO Sensor, and Intake Air Temperature 1 and 2 Sensor.

Search for P00F4 GMC Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P00F4 GMC code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P00F4 GMC Description

The Intake Air 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 Engine Control Module (ECM) 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 be set when the ECM detects that the humidity sensor signal is less than or equal to 5 % for greater than 5 s.

OBDII Code P00F4 GMC - Intake Air Humidity Sensor Circuit Low Voltage - AutoCodes.com
P00F4 GMC Code - Intake Air Humidity Sensor Circuit Low Voltage

Need More Information on the Code?

Need more information on how to fix the P00F4 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P00F4 GMC code diagnosed by a professional: Find a repair shop in your area

Code P00F4 GMC comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P00F4 GMC code? Have you replaced any parts?
Any information is appreciated. Thanks