Engine-CodesFord – P0071 2018 Ford F150

P0071 2018 Ford F150 Code - Ambient Air Temperature Sensor Circuit 'A' Range/Performance

Quick Answer

The P0071 diagnostic trouble code (DTC) for a 2018 Ford F150 refers to the Ambient Air Temperature Sensor Circuit 'A' Range/Performance. Common causes include Faulty ambient air temperature sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connector. 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 2018 Ford F150 indicates Ambient Air Temperature Sensor Circuit 'A' Range/Performance.
Common causes
Common causes include Faulty ambient air temperature sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination in the sensor connector.
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 17, 2024
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Code P0071 2018 Ford F150 Description

The P0071 diagnostic trouble code (DTC) for a 2018 Ford F150 refers to the Ambient Air Temperature Sensor Circuit 'A' Range/Performance. This code indicates that there is a problem with the ambient air temperature sensor circuit, specifically in terms of its range or performance. The ambient air temperature sensor is a crucial component of the vehicle's engine management system, as it provides data to the engine control module (ECM) regarding the temperature of the air entering the engine. This information is essential for the ECM to adjust the air-fuel mixture and ignition timing for optimal engine performance and efficiency.

OBDII Code P0071 2018 Ford F150 - Ambient Air Temperature Sensor Circuit 'A' Range/Performance
P0071 2018 Ford F150 Code - Ambient Air Temperature Sensor Circuit 'A' Range/Performance

Common Causes of P0071 2018 Ford F150

  1. Faulty ambient air temperature sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or contamination in the sensor connector
  4. Malfunctioning ECM
  5. Environmental factors such as extreme temperatures affecting sensor performance

Symptoms of P0071 2018 Ford F150

  1. Check engine light illuminated
  2. Inaccurate temperature readings on the vehicle's display
  3. Decreased fuel efficiency
  4. Engine running rough or stalling
  5. Poor engine performance

How to Fix P0071 2018 Ford F150

  1. Begin by using a scan tool to retrieve the DTC and verify the code.
  2. Inspect the ambient air temperature sensor and its wiring for any visible damage or corrosion.
  3. Test the ambient air temperature sensor using a multimeter to check for proper resistance values.
  4. Replace the ambient air temperature sensor if it is found to be faulty.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0071 2018 Ford F150

The typical repair costs for addressing the P0071 code on a 2018 Ford F150 can vary depending on the specific cause of the issue. In general, the cost of replacing the ambient air temperature sensor can range from $50 to $150, while the labor cost for the repair can range from $80 to $150 per hour. Additional costs may be incurred if there are other components that need to be replaced or if further diagnostics are required. It is advisable to consult with a qualified mechanic or auto repair shop to get a more accurate estimate based on the specific circumstances of the vehicle.

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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 2018 Ford F150 Code

1. What are the common symptoms of OBDII code P0071 in a 2018 Ford F150?

The common symptoms of P0071 include inaccurate temperature readings on the vehicle's display, incorrect climate control operation, and potentially reduced fuel efficiency.

2. What does OBDII code P0071 indicate in a 2018 Ford F150?

OBDII code P0071 in a 2018 Ford F150 refers to an issue with the Ambient Air Temperature Sensor Circuit 'A', indicating a range/performance problem with the sensor.

3. What are the possible causes of OBDII code P0071 in a 2018 Ford F150?

Possible causes of P0071 in a 2018 Ford F150 include a faulty ambient air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's connection to the vehicle's computer.

4. How can I diagnose the Ambient Air Temperature Sensor Circuit 'A' issue in my 2018 Ford F150?

To diagnose the P0071 code, you can visually inspect the sensor and its wiring for any visible damage, use a multimeter to test the sensor's resistance, and check for any loose connections or corrosion in the circuit.

5. Can I continue driving my 2018 Ford F150 with OBDII code P0071?

While the vehicle may still be operable with the P0071 code, it is recommended to address the issue promptly to prevent potential inaccuracies in temperature readings and other related problems.

6. How can I repair OBDII code P0071 in my 2018 Ford F150?

Repairing P0071 may involve replacing the ambient air temperature sensor if it is faulty, repairing or replacing damaged wiring or connectors, and clearing the code with an OBDII scanner.

7. Is it possible to reset OBDII code P0071 in a 2018 Ford F150 without fixing the underlying issue?

While you can clear the code temporarily with an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring.

8. Will OBDII code P0071 cause my check engine light to illuminate in my 2018 Ford F150?

Yes, OBDII code P0071 typically triggers the check engine light to illuminate in a 2018 Ford F150, indicating a problem with the Ambient Air Temperature Sensor Circuit 'A'.

9. Can extreme weather conditions impact the functionality of the ambient air temperature sensor in a 2018 Ford F150?

Extreme weather conditions such as extreme heat or cold can potentially affect the ambient air temperature sensor's performance and lead to the triggering of OBDII code P0071.

10. How much does it cost to repair OBDII code P0071 in a 2018 Ford F150?

The cost of repairing OBDII code P0071 in a 2018 Ford F150 can vary depending on the specific issue, but it may involve expenses for sensor replacement, wiring repairs, and labor costs at a mechanic or dealership.

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