P0074 2018 Ford F150 Code - Ambient Air Temperature Sensor Circuit 'A' Intermittent/Erratic
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
- P0074 2018 Ford F150 indicates Ambient Air Temperature Sensor Circuit 'A' Intermittent/Erratic.
- 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 P0074 2018 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 signal changes beyond the minimum or maximum calibrated limit.
What are the Possible Causes of the DTC P0074 2018 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 P0074 2018 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 P0074 2018 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.
Need more information about the P0074 2018 Ford F150 code?
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Frequently Asked Questions about P0074 2018 Ford F150 Code
1. What are the common symptoms of OBDII code P0074 on a 2018 Ford F150?
The common symptoms of code P0074 include inaccurate readings on the temperature display, erratic temperature readings, and potential issues with the vehicle's climate control system.
2. What does the OBDII code P0074 on a 2018 Ford F150 mean?
Code P0074 indicates a malfunction in the Ambient Air Temperature Sensor Circuit 'A,' specifically an intermittent or erratic signal detected by the sensor.
3. What are the possible causes of OBDII code P0074 on a 2018 Ford F150?
Possible causes of code P0074 include a faulty ambient air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's signal reaching the vehicle's control module.
4. How can I diagnose the Ambient Air Temperature Sensor Circuit 'A' issue causing code P0074 on my 2018 Ford F150?
Diagnosing the issue involves checking the sensor's wiring and connectors for any damage, testing the sensor's resistance and voltage output, and verifying that the sensor's readings align with the actual ambient temperature.
5. Can I drive my 2018 Ford F150 with OBDII code P0074?
While the vehicle may still be operable with code P0074, it is advisable to address the underlying issue promptly to prevent potential inaccuracies in temperature readings and ensure proper functioning of the climate control system.
6. How can I repair OBDII code P0074 on my 2018 Ford F150?
Repairing code P0074 typically involves replacing the ambient air temperature sensor if it is found to be faulty, repairing any damaged wiring or connectors, and clearing the code with an OBDII scanner.
7. Will resetting the OBDII code P0074 on my 2018 Ford F150 make the issue go away?
Resetting the code may temporarily clear the warning light, but if the underlying issue with the Ambient Air Temperature Sensor Circuit 'A' is not addressed, the code is likely to reappear.
8. How much does it cost to fix OBDII code P0074 on a 2018 Ford F150?
The cost of fixing code P0074 can vary depending on the cause of the issue, the parts needed for repair, and labor charges. Replacing the ambient air temperature sensor or repairing wiring may cost a few hundred dollars.
9. Can a DIY enthusiast repair OBDII code P0074 on a 2018 Ford F150?
If you have experience with automotive repairs and the necessary tools, you may be able to diagnose and repair code P0074 yourself by following the manufacturer's service manual or seeking guidance from online resources.
10. Is OBDII code P0074 a common issue in 2018 Ford F150 vehicles?
While not as common as some other OBDII codes, issues with the Ambient Air Temperature Sensor Circuit 'A' leading to code P0074 can occur in 2018 Ford F150 vehicles, particularly due to sensor malfunctions or wiring problems.
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