AutoCodes – GMC – P0072 2014 GMC Sierra

P0072 2014 GMC Sierra Code - Ambient Air Temperature Sensor Circuit Low Voltage

Quick Answer

The Engine Control Module (ECM) monitors the ambient air temperature sensor with a low reference circuit and signal circuit. Common causes include Faulty Ambient Air Temperature Sensor, Ambient Air Temperature Sensor harness is open or shorted, Ambient Air Temperature 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: P0072 2014 GMC Sierra indicates Ambient Air Temperature Sensor Circuit Low Voltage.
Common causes: Common causes include Faulty Ambient Air Temperature Sensor, Ambient Air Temperature Sensor harness is open or shorted, Ambient Air Temperature 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 286

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 16, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0072 2014 GMC Sierra Description

The Engine Control Module (ECM) monitors the ambient air temperature sensor with a low reference circuit and signal circuit. The ECM monitors the voltage drop across the sensor, which is inversely proportional to temperature. When the ambient air temperature is cold, the resistance of the sensor is high. When the ambient air temperature is warm, the resistance of the sensors is low. The engine control module converts the voltage value to a temperature value and sends the value to the Display Module via serial data. The Display Module displays the temperature. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the Ambient Air Temperature Sensor signal is more than 88°C (190°F).

OBDII Code P0072 2014 GMC Sierra - Ambient Air Temperature Sensor Circuit Low Voltage - AutoCodes.com — P0072 2014 GMC Sierra Code - Ambient Air Temperature Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0072 2014 GMC Sierra?

Faulty Ambient Air Temperature Sensor
Ambient Air Temperature Sensor harness is open or shorted
Ambient Air Temperature Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0072 2014 GMC Sierra?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0072 2014 GMC Sierra 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 P0072 2014 GMC Sierra code?

Need more information on how to fix the P0072 2014 GMC Sierra code? Get Access to Factory Service Manuals

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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 P0072 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P0072 in a 2014 GMC Sierra?

- Common symptoms include inaccurate ambient air temperature readings on the vehicle display, issues with the climate control system, and potential impact on fuel efficiency.

2. What does the OBDII code P0072 indicate in a 2014 GMC Sierra?

- The code P0072 indicates that there is a low voltage condition detected in the circuit of the ambient air temperature sensor.

3. What are the possible causes of OBDII code P0072 in a 2014 GMC Sierra?

- Possible causes include a faulty ambient air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's ground connection.

4. How can I diagnose the OBDII code P0072 in my 2014 GMC Sierra?

- Diagnosing the code typically involves checking the ambient air temperature sensor for proper operation, inspecting the sensor wiring and connectors for damage, and testing the voltage levels in the circuit.

5. Can I drive my 2014 GMC Sierra with the OBDII code P0072?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent potential problems with the climate control system or fuel efficiency.

6. How can I repair OBDII code P0072 in my 2014 GMC Sierra?

- Repair options may include replacing the ambient air temperature sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the sensor's ground connection.

7. Can weather conditions affect the ambient air temperature sensor and trigger code P0072?

- Extreme weather conditions such as extreme heat or cold can potentially affect the ambient air temperature sensor readings and contribute to triggering the code P0072.

8. Will resetting the check engine light clear the OBDII code P0072 in my 2014 GMC Sierra?

- Resetting the check engine light may clear the code temporarily, but if the underlying issue causing code P0072 is not addressed, the code is likely to reappear.

9. Is it possible to bypass or ignore OBDII code P0072 in a 2014 GMC Sierra?

- It is not recommended to bypass or ignore the code, as it can lead to further issues with the vehicle's systems and potentially affect its performance and fuel efficiency.

10. How much does it typically cost to repair OBDII code P0072 in a 2014 GMC Sierra?

- The cost of repairing code P0072 can vary depending on the specific cause of the issue, but it may involve parts and labor costs ranging from $100 to $300 or more.