P0071 2017 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 2017 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 2017 GMC Sierra Description
What are the Possible Causes of the DTC P0071 2017 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 2017 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 2017 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 2017 GMC Sierra Code
1. What does the OBDII code P0071 mean on a 2017 GMC Sierra?
P0071 indicates an issue with the Ambient Air Temperature Sensor's performance, specifically that its readings are inconsistent or outside expected parameters.
2. What are the common symptoms of a P0071 code in a 2017 GMC Sierra?
Symptoms may include inaccurate external temperature readings on the dashboard, issues with HVAC performance, or the check engine light turning on.
3. What causes the P0071 code on a 2017 GMC Sierra?
Common causes include a faulty ambient air temperature sensor, damaged wiring or connectors, corrosion, or a malfunctioning control module.
4. Can a P0071 code affect my truck’s performance?
While it may not directly affect engine performance, it can impact HVAC functionality, such as automatic climate control, and may interfere with other systems relying on temperature input.
5. How do I diagnose a P0071 code on my GMC Sierra?
Start by inspecting the ambient air temperature sensor for physical damage or debris, check the wiring and connectors for damage or corrosion, and use a scan tool to monitor live data from the sensor.
6. Where is the ambient air temperature sensor located on a 2017 GMC Sierra?
The sensor is typically located near the front grille or bumper, exposed to external air for accurate temperature readings.
7. Can I drive my 2017 GMC Sierra with a P0071 code?
Yes, you can drive with this code, but you may experience inconvenience with climate control systems or inaccurate temperature readings.
8. How do I fix a P0071 code on my GMC Sierra?
Repairs may involve cleaning or replacing the ambient air temperature sensor, repairing damaged wiring, or updating the vehicle’s control module software if necessary.
9. How much does it cost to fix a P0071 code on a GMC Sierra?
Replacing the ambient air temperature sensor typically costs between $50 and $150, including parts and labor, though wiring repairs or additional diagnostics may increase the cost.
10. Can I reset the P0071 code without fixing the issue?
While you can clear the code with a scan tool, it will likely return unless the underlying issue is repaired.
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