P0071 2015 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 2015 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.
Code P0071 2015 GMC Sierra Description
What are the Possible Causes of the DTC P0071 2015 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 2015 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 2015 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.
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Frequently Asked Questions about P0071 2015 GMC Sierra Code
1. What does the OBDII code P0071 mean on a 2015 GMC Sierra?
The P0071 code indicates an issue with the performance of the Ambient Air Temperature (AAT) sensor, often related to its signal being out of range or inconsistent.
2. What are the symptoms of a P0071 code on a GMC Sierra?
Symptoms may include incorrect ambient temperature readings on the dashboard, issues with the HVAC system, and potential problems with engine performance or fuel efficiency.
3. What causes the P0071 code to appear on a 2015 GMC Sierra?
Common causes include a faulty ambient air temperature sensor, damaged or corroded wiring, a poor electrical connection, or a failed control module.
4. Where is the ambient air temperature sensor located on a 2015 GMC Sierra?
The sensor is typically located near the front grille or behind the front bumper, where it can measure outside air temperature.
5. Can a faulty ambient air temperature sensor affect the vehicle’s performance?
Yes, it can impact HVAC operation and may affect engine performance by providing incorrect temperature data to the control module.
6. How do you diagnose a P0071 code on a GMC Sierra?
Diagnosis involves using a scan tool to check live data, inspecting the sensor and its wiring for damage, and testing the sensor's resistance with a multimeter.
7. Can I drive my 2015 GMC Sierra with a P0071 code?
While it may not cause immediate critical issues, it's best to address the code promptly to avoid potential HVAC or performance problems.
8. How do you fix a P0071 code on a GMC Sierra?
Repairs may include replacing the ambient air temperature sensor, repairing damaged wiring, cleaning corroded connections, or reprogramming the control module if needed.
9. How much does it cost to fix a P0071 code on a 2015 GMC Sierra?
The cost can range from $50 to $200, depending on whether only the sensor needs replacement or additional wiring repairs are required.
10. Can a P0071 code clear itself on a GMC Sierra?
The code may clear temporarily if the issue is intermittent, but it will likely reappear until the root cause is resolved.
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