P0073 Lincoln Code - Ambient Air Temperature Sensor Circuit 'A' High
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
- P0073 Lincoln indicates Ambient Air Temperature Sensor Circuit 'A' High.
- 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 P0073 Lincoln 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 is greater than the self-test maximum.
What are the Possible Causes of the DTC P0073 Lincoln?
- 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 P0073 Lincoln?
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 P0073 Lincoln 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 P0073 Lincoln Code
1. What are the common symptoms of OBDII code P0073 in a Lincoln?
- Common symptoms include incorrect ambient air temperature readings, illumination of the Check Engine Light, and potential issues with the vehicle's climate control system.
2. What can cause the OBDII code P0073 in a Lincoln?
- The code P0073 is typically triggered by a malfunctioning ambient air temperature sensor or issues within the sensor circuit, such as damaged wiring or poor connections.
3. How can I diagnose the OBDII code P0073 in my Lincoln?
- Diagnosis involves checking the ambient air temperature sensor and its circuit for any visible damage, testing the sensor's resistance, and using a diagnostic scanner to read the sensor data.
4. What are some DIY repair tips for resolving the OBDII code P0073 in a Lincoln?
- DIY repair tips include checking and repairing any damaged wiring, connectors, or terminals related to the ambient air temperature sensor circuit, and replacing the sensor if necessary.
5. Can driving with the OBDII code P0073 in a Lincoln cause any additional damage?
- Driving with the code P0073 may not cause immediate harm to the vehicle, but it can lead to inaccurate temperature readings and potential issues with the climate control system.
6. How important is it to fix the OBDII code P0073 in a Lincoln promptly?
- It is recommended to address the code P0073 promptly to ensure accurate temperature readings and proper functioning of the climate control system, as well as to prevent any potential long-term issues.
7. Is it possible to reset the Check Engine Light triggered by the OBDII code P0073 in a Lincoln?
- The Check Engine Light can be reset using an OBDII scanner after the underlying issue causing the code P0073 has been diagnosed and repaired. However, if the issue persists, the light may come back on.
8. How much does it typically cost to repair the OBDII code P0073 in a Lincoln at a professional mechanic or dealership?
- The cost of repairing the OBDII code P0073 can vary depending on the extent of the issue and labor rates, but it may range from $100 to $300 for parts and labor.
9. Are there any recalls or technical service bulletins related to the OBDII code P0073 in Lincoln vehicles?
- It is advisable to check with a Lincoln dealership or online resources for any recalls or technical service bulletins related to the OBDII code P0073 specific to your vehicle make and model.
10. Can extreme weather conditions impact the ambient air temperature sensor and trigger the OBDII code P0073 in a Lincoln?
- Extreme weather conditions such as extreme heat or cold can potentially affect the ambient air temperature sensor's performance and contribute to triggering the code P0073.
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