Engine-CodesMitsubishi – P0071 Mitsubishi

P0071 Mitsubishi Code - Ambient Air Temperature Sensor Performance

Quick Answer

The P0071 code for Mitsubishi vehicles indicates a problem with the Ambient Air Temperature Sensor. Common causes include Faulty Ambient Air Temperature Sensor, Wiring or connector issues, Corrosion or damage to the sensor. 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 Mitsubishi indicates Ambient Air Temperature Sensor Performance.
Common causes
Common causes include Faulty Ambient Air Temperature Sensor, Wiring or connector issues, Corrosion or damage to the sensor.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0071 Mitsubishi Description

The P0071 code for Mitsubishi vehicles indicates a problem with the Ambient Air Temperature Sensor. This sensor is responsible for measuring the outside air temperature and sending this information to the engine control module (ECM). The ECM uses this data to adjust various engine parameters, such as fuel delivery and ignition timing, to optimize performance and efficiency based on the external temperature.

OBDII Code P0071 Mitsubishi - Ambient Air Temperature Sensor Performance
P0071 Mitsubishi Code - Ambient Air Temperature Sensor Performance

Common Causes of P0071 Mitsubishi

  1. Faulty Ambient Air Temperature Sensor
  2. Wiring or connector issues
  3. Corrosion or damage to the sensor
  4. Environmental factors, such as extreme temperatures or moisture, affecting the sensor's performance
  5. ECM software issues

Symptoms of P0071 Mitsubishi

  1. Inaccurate readings on the vehicle's temperature display
  2. Poor fuel economy
  3. Engine stalling or rough idling
  4. Issues with the vehicle's climate control system
  5. Check Engine Light illuminated on the dashboard

How to Fix P0071 Mitsubishi

  1. Diagnose the issue by using a scan tool to read the code and verify the Ambient Air Temperature Sensor's readings.
  2. Inspect the sensor, wiring, and connectors for any visible damage or corrosion.
  3. Replace the Ambient Air Temperature Sensor if it is found to be faulty or damaged.
  4. Clear the diagnostic trouble code from the ECM and reset the system.
  5. Test drive the vehicle to ensure the issue has been resolved and the sensor is providing accurate readings.

Cost to Fix P0071 Mitsubishi

The cost of repairing a P0071 code for Mitsubishi vehicles can vary depending on the specific model and year of the vehicle, as well as the location and labor rates of the auto repair shop. On average, the cost of replacing the Ambient Air Temperature Sensor and addressing any related issues can range from $100 to $300. It's important to consult with a professional mechanic to get an accurate estimate based on your vehicle's needs.

When is the Code Detected?

The Engine Control Module (ECM) has detected an open or short circuit condition on the Ambient Air Temperature (AAT) sensor circuit.

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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 Mitsubishi Code

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

- Common symptoms include inaccurate temperature readings on the dashboard, issues with the air conditioning system, and potential impact on fuel economy.

2. What typically causes the OBDII code P0071 in a Mitsubishi related to the Ambient Air Temperature Sensor Performance?

- This code is often triggered by a faulty ambient air temperature sensor, wiring issues, or a problem with the sensor's connection to the vehicle's ECM.

3. How can I diagnose the cause of OBDII code P0071 in my Mitsubishi related to the Ambient Air Temperature Sensor Performance?

- A thorough inspection of the ambient air temperature sensor, its wiring, and connections, along with testing the sensor's resistance and voltage output can help diagnose the issue.

4. Can driving with OBDII code P0071 related to the Ambient Air Temperature Sensor Performance cause further damage to my Mitsubishi?

- While driving with this code may not cause immediate damage, it can lead to poor performance, reduced fuel efficiency, and potential issues with the vehicle's air conditioning system.

5. Are there any DIY repair tips for resolving OBDII code P0071 in a Mitsubishi related to the Ambient Air Temperature Sensor Performance?

- DIY repair tips may include checking and cleaning the sensor's connection, inspecting the sensor for damage, and replacing the sensor if necessary. However, it's recommended to consult a professional for accurate diagnosis and repair.

6. What is the typical cost to repair OBDII code P0071 in a Mitsubishi related to the Ambient Air Temperature Sensor Performance?

- The cost of repair can vary depending on the exact cause of the issue. Replacing the ambient air temperature sensor or addressing wiring problems may cost anywhere from $100 to $300 at a repair shop.

7. Can resetting the OBDII code P0071 related to the Ambient Air Temperature Sensor Performance resolve the issue in my Mitsubishi?

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

8. How important is it to address OBDII code P0071 related to the Ambient Air Temperature Sensor Performance promptly in my Mitsubishi?

- Addressing this code promptly is recommended to ensure accurate temperature readings, optimal vehicle performance, and to prevent potential issues with the air conditioning system.

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