P0071 2015 Ford F150 Code - Ambient Air Temperature Sensor Circuit 'A' Range/Performance
Quick Answer
The Ambient Air Temperature (AAT) Sensor is a thermistor device in which resistance changes with temperature. Common causes include Faulty Ambient Air Temperature (AAT) 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 Ford F150 indicates Ambient Air Temperature Sensor Circuit 'A' Range/Performance.
- Common causes
- Common causes include Faulty Ambient Air Temperature (AAT) 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 Ford F150 Description
Thermistor type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow. Voltage that is dropped across a fixed resistor in series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The AAT sensor provides ambient air temperature information to the PCM for the temperature sensor correlation tests. The PCM also communicates the AAT sensor information to all other modules on the controller area network (CAN).
This Diagnostic Trouble Code (DTC) sets when the ambient air temperature (AAT) sensor reading does not correlate with the other temperature sensor readings at ignition ON. The PCM runs this logic after an engine off and a calibrated soak period, typically 6 to 8 hours. This soak period allows the AAT sensor and the other temperature sensors to stabilize and not differ by greater than a calibrated value, typically 18°C (32.4°F).
What are the Possible Causes of the DTC P0071 2015 Ford F150?
- Faulty Ambient Air Temperature (AAT) Sensor
- Ambient Air Temperature Sensor harness is open or shorted
- Ambient Air Temperature Sensor circuit poor electrical connection
How to Fix the DTC P0071 2015 Ford F150?
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 Ford F150 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 Ford F150 Code
1. What are the common symptoms of OBDII code P0071 on a 2015 Ford F150?
- Common symptoms include inaccurate ambient temperature readings on the vehicle's display, issues with the climate control system, and potential fuel efficiency problems.
2. What does the Ambient Air Temperature Sensor Circuit 'A' Range/Performance error code P0071 indicate in a 2015 Ford F150?
- This code indicates that the Engine Control Module (ECM) has detected a problem with the ambient air temperature sensor circuit 'A', signaling a range or performance issue.
3. What are the possible causes of the P0071 code on a 2015 Ford F150?
- Possible causes include a faulty ambient air temperature sensor, wiring or connector issues in the sensor circuit, a damaged sensor, or a problem with the ECM.
4. How serious is the P0071 code on a 2015 Ford F150?
- While the P0071 code is not usually considered a critical issue, it can impact the accuracy of temperature readings and potentially lead to problems with the vehicle's climate control system.
5. Can I continue driving my 2015 Ford F150 with the P0071 fault code?
- It is generally safe to drive the vehicle with the P0071 code, but it's advisable to address the issue promptly to prevent any potential long-term effects on fuel efficiency and climate control functionality.
6. How can I diagnose and repair the P0071 code on my 2015 Ford F150?
- Diagnosis typically involves inspecting the ambient air temperature sensor, checking the sensor's wiring and connections, and testing the sensor's resistance. Repair may involve replacing the sensor or addressing any wiring issues.
7. Can a DIY enthusiast fix the P0071 code on a 2015 Ford F150?
- DIY enthusiasts with automotive repair experience may be able to address the P0071 code by following repair guides and using the necessary tools to replace the ambient air temperature sensor or fix wiring problems.
8. Will resetting the OBDII system clear the P0071 code on a 2015 Ford F150?
- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the P0071 code is not addressed, the code is likely to reappear after driving the vehicle for a while.
9. How much does it cost to repair the P0071 fault code on a 2015 Ford F150?
- The cost of repairing the P0071 code can vary depending on the cause of the issue, the labor rates in your area, and whether you choose to address the problem yourself or take your vehicle to a mechanic.
10. Is the Ambient Air Temperature Sensor Circuit 'A' Range/Performance error code covered under warranty for a 2015 Ford F150?
- Depending on the vehicle's warranty status and the specific terms of coverage, the repair for the P0071 code may be covered under the manufacturer's warranty. It's advisable to check with a Ford dealership or your warranty provider for more information.
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