AutoCodes – Chevrolet – P0071 Chevrolet

P0071 Chevrolet 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 Chevrolet 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 1,682

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 Chevrolet 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 Chevrolet - Ambient Air Temperature Sensor Performance - AutoCodes.com — P0071 Chevrolet Code - Ambient Air Temperature Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P0071 Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

Need more information on how to fix the P0071 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0071 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P0071 2014 Chevrolet Silverado — Ambient Air Temperature Sensor Performance
P0071 2015 Chevrolet Silverado — Ambient Air Temperature Sensor Performance
P0071 2016 Chevrolet Silverado — Ambient Air Temperature Sensor Performance
P0071 2017 Chevrolet Silverado — Ambient Air Temperature Sensor Performance
P0071 2018 Chevrolet Silverado — Ambient Air Temperature Sensor Performance

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 Chevrolet Code

1. What are the common symptoms of OBDII code P0071 in a Chevrolet related to the Ambient Air Temperature Sensor Performance?

- Common symptoms include inaccurate temperature readings on the dashboard, issues with the climate control system, and reduced fuel efficiency.

2. What are the possible causes of the P0071 code in a Chevrolet indicating Ambient Air Temperature Sensor Performance issues?

- The code may be triggered by a faulty ambient air temperature sensor, damaged wiring or connectors, or a problem with the sensor circuit.

3. How can I diagnose the cause of the P0071 code in my Chevrolet due to the Ambient Air Temperature Sensor?

- You can use a multimeter to test the ambient air temperature sensor for proper resistance values, visually inspect the sensor and wiring for damage, and check for loose connections.

4. Can I continue driving my Chevrolet with an OBDII code P0071 related to the Ambient Air Temperature Sensor Performance?

- While the vehicle may still be drivable, it is recommended to address the issue promptly to prevent further complications and ensure accurate temperature readings for proper vehicle operation.

5. Is it possible to reset the P0071 code in a Chevrolet without fixing the underlying issue with the Ambient Air Temperature Sensor?

- Clearing the code without addressing the root cause will only result in the code reappearing once the issue is detected again by the vehicle's diagnostic system.

6. How much does it typically cost to repair the Ambient Air Temperature Sensor issue causing the P0071 code in a Chevrolet?

- The repair costs can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Are there any DIY repair tips for fixing the P0071 code related to the Ambient Air Temperature Sensor in a Chevrolet?

- DIY enthusiasts with automotive experience can attempt to replace the ambient air temperature sensor themselves by following the vehicle's service manual or online guides.

8. Can extreme weather conditions impact the performance of the Ambient Air Temperature Sensor in a Chevrolet and trigger the P0071 code?

- Yes, extreme temperatures can affect the sensor's performance, leading to inaccurate readings and potentially triggering the P0071 code.

9. Will fixing the P0071 code related to the Ambient Air Temperature Sensor in my Chevrolet improve fuel efficiency?

- Yes, addressing the ambient air temperature sensor issue can help restore accurate temperature readings, which can contribute to improved fuel efficiency and overall vehicle performance.

10. How often should the Ambient Air Temperature Sensor be inspected and replaced in a Chevrolet to prevent the recurrence of the P0071 code?

- It is recommended to inspect the ambient air temperature sensor during routine maintenance checks and replace it if any issues are detected to prevent the reoccurrence of the P0071 code.