AutoCodes – GMC – P00F5 GMC

P00F5 GMC Code - Intake Air Humidity Sensor Circuit High Voltage

Quick Answer

The Intake Air Humidity Sensor measures the ambient humidity of the air in the sensor bore. Common causes include Faulty Intake Air Humidity Sensor, Intake Air Humidity Sensor harness is open or shorted, Intake Air Humidity Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P00F5 GMC indicates Intake Air Humidity Sensor Circuit High Voltage.
Common causes: Common causes include Faulty Intake Air Humidity Sensor, Intake Air Humidity Sensor harness is open or shorted, Intake Air Humidity Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 3,009

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 17, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P00F5 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 greater than or equal to 95 % for greater than 5 s.

OBDII Code P00F5 GMC - Intake Air Humidity Sensor Circuit High Voltage - AutoCodes.com — P00F5 GMC Code - Intake Air Humidity Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P00F5 GMC?

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)

How to Fix the DTC P00F5 GMC?

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

What does this mean?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P00F5 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P00F5 GMC code?

Need more information on how to fix the P00F5 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P00F5 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P00F5 2014 GMC Sierra — Intake Air Humidity Sensor Circuit High Voltage
P00F5 2015 GMC Sierra — Intake Air Humidity Sensor Circuit High Voltage
P00F5 2016 GMC Sierra — Intake Air Humidity Sensor Circuit High Voltage
P00F5 2017 GMC Sierra — Intake Air Humidity Sensor Circuit High Voltage
P00F5 2018 GMC Sierra — Intake Air Humidity Sensor Circuit High Voltage

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P00F5 GMC Code

1. What are the common symptoms of OBDII code P00F5 GMC (Intake Air Humidity Sensor Circuit High Voltage)?

- Common symptoms include poor engine performance, decreased fuel efficiency, and potential stalling or rough idling.

2. What causes the OBDII code P00F5 GMC to trigger?

- The code is triggered when the Engine Control Module (ECM) detects a high voltage in the intake air humidity sensor circuit.

3. How can I diagnose the cause of OBDII code P00F5 GMC?

- Diagnosing the issue involves checking the intake air humidity sensor, inspecting the wiring and connectors for damage, and verifying the sensor's voltage readings.

4. Can a faulty intake air humidity sensor cause other problems?

- Yes, a faulty sensor can lead to inaccurate air intake readings, affecting the engine's air-fuel mixture and potentially causing additional issues with performance and emissions.

5. Are there any tips for repairing OBDII code P00F5 GMC?

- Repairing the code may involve replacing the intake air humidity sensor, repairing damaged wiring or connectors, and clearing the code with a diagnostic tool.

6. Is it safe to continue driving with OBDII code P00F5 GMC active?

- It is recommended to address the issue promptly to prevent potential damage to the engine and to ensure optimal performance and fuel efficiency.

7. How much does it typically cost to repair OBDII code P00F5 GMC?

- The cost of repairing the P00F5 code can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Can I reset the OBDII code P00F5 GMC without fixing the underlying issue?

- While you can clear the code with a diagnostic tool, it is important to address the root cause to prevent the code from reappearing and to maintain proper engine function.

9. Are there any preventive measures to avoid OBDII code P00F5 GMC in the future?

- Regular vehicle maintenance, including checking sensor connections and wiring, can help prevent issues like high voltage in the intake air humidity sensor circuit.

10. How long does it take to repair OBDII code P00F5 GMC?

- The repair time can vary based on the specific cause of the code, but it typically takes between 1-2 hours for a professional technician to diagnose and resolve the issue.