AutoCodes – GMC – P0071 2016 GMC Sierra

P0071 2016 GMC Sierra Code - Ambient Air Temperature Sensor Performance

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: P0071 2016 GMC Sierra indicates Ambient Air Temperature Sensor Performance.
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 273

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 P0071 2016 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 if the ECM detects that during the first 20s of run time after the 1 hour soaking period, the difference between the outside air temperature and the engine intake air temperature is greater than 30°C (86°F).

OBDII Code P0071 2016 GMC Sierra - Ambient Air Temperature Sensor Performance - AutoCodes.com — P0071 2016 GMC Sierra Code - Ambient Air Temperature Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P0071 2016 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 P0071 2016 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 P0071 2016 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 P0071 2016 GMC Sierra code?

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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 P0071 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P0071 (Ambient Air Temperature Sensor Performance) on a 2016 GMC Sierra?

The common symptoms include inaccurate temperature readings on the dashboard, issues with the climate control system, and potential impact on the vehicle's fuel efficiency.

2. What could cause the OBDII code P0071 to trigger in a 2016 GMC Sierra?

The code P0071 typically triggers when there is a problem with the ambient air temperature sensor, such as a faulty sensor, wiring issues, or a poor connection.

3. How can I diagnose the cause of OBDII code P0071 on my 2016 GMC Sierra?

Diagnosing the issue involves checking the ambient air temperature sensor for proper operation, inspecting the sensor's wiring for damage or loose connections, and using a scan tool to read the sensor data.

4. Can I continue driving my 2016 GMC Sierra with the OBDII code P0071 active?

While the vehicle may still be driveable with the code P0071, it is recommended to address the issue promptly to prevent potential problems with the vehicle's performance and fuel efficiency.

5. What are some repair tips for fixing OBDII code P0071 on a 2016 GMC Sierra?

Repair tips include replacing the ambient air temperature sensor if it is faulty, repairing any damaged wiring, ensuring all connections are secure, and clearing the code with a scan tool after the repairs are done.

6. Will resetting the OBDII code P0071 on a 2016 GMC Sierra make it go away permanently?

Resetting the code may temporarily clear it, but if the underlying issue with the ambient air temperature sensor is not fixed, the code is likely to reappear.

7. How much does it typically cost to repair OBDII code P0071 on a 2016 GMC Sierra?

The cost of repairing OBDII code P0071 can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Can a DIY enthusiast fix OBDII code P0071 on a 2016 GMC Sierra?

DIY enthusiasts with automotive repair experience may be able to diagnose and fix the issue causing OBDII code P0071, especially if it involves replacing the ambient air temperature sensor or repairing wiring.

9. Is the ambient air temperature sensor performance critical for the proper functioning of a 2016 GMC Sierra?

While the ambient air temperature sensor performance is not critical for the basic operation of the vehicle, it does play a role in various systems like climate control and fuel management, so addressing any issues is important.

10. How long does it typically take to repair OBDII code P0071 on a 2016 GMC Sierra?

The repair time can vary based on the exact cause of the issue, but a straightforward repair involving replacing the ambient air temperature sensor or fixing wiring connections may take around 1-2 hours.