P0073 2015 GMC Sierra Code - Ambient Air Temperature Sensor Circuit High Voltage
Quick Answer
The P0073 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Ambient Air Temperature (AAT) sensor circuit registering high voltage. Common causes include Faulty AAT Sensor: The AAT sensor itself may be malfunctioning, providing inaccurate high voltage readings, Damaged Wiring or Connectors: Wiring or connectors in the AAT sensor circuit may be damaged, leading to high voltage signals, ECM Malfunction: A malfunctioning ECM can also cause the AAT sensor circuit to register high voltage. 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 2015 GMC Sierra indicates Ambient Air Temperature Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty AAT Sensor: The AAT sensor itself may be malfunctioning, providing inaccurate high voltage readings, Damaged Wiring or Connectors: Wiring or connectors in the AAT sensor circuit may be damaged, leading to high voltage signals, ECM Malfunction: A malfunctioning ECM can also cause the AAT sensor circuit to register high voltage.
- 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.
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Code P0073 2015 GMC Sierra Description
The P0073 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Ambient Air Temperature (AAT) sensor circuit registering high voltage. The AAT sensor is responsible for measuring the temperature of the air surrounding the vehicle, providing crucial data to the engine control module (ECM) for adjusting fuel delivery and ignition timing. When the sensor circuit detects a high voltage signal, it means that the temperature reading is higher than expected, potentially leading to incorrect fuel mixture and ignition timing adjustments.
Common Causes of P0073 2015 GMC Sierra
- Faulty AAT Sensor: The AAT sensor itself may be malfunctioning, providing inaccurate high voltage readings.
- Damaged Wiring or Connectors: Wiring or connectors in the AAT sensor circuit may be damaged, leading to high voltage signals.
- ECM Malfunction: A malfunctioning ECM can also cause the AAT sensor circuit to register high voltage.
- Environmental Factors: Extreme temperatures or exposure to moisture can affect the AAT sensor's performance.
- Other Electrical Issues: Other electrical problems in the vehicle's system can interfere with the AAT sensor circuit.
Symptoms of P0073 2015 GMC Sierra
- Check Engine Light: The most common symptom associated with the P0073 code is the illumination of the check engine light on the vehicle's dashboard.
- Inaccurate Temperature Readings: The AAT sensor may provide incorrect temperature readings to the ECM, leading to improper engine adjustments.
- Decreased Fuel Efficiency: Incorrect fuel mixture due to high voltage readings can result in reduced fuel efficiency.
- Engine Performance Issues: The vehicle may experience rough idling, hesitation, or lack of power under acceleration.
- Emission Problems: The vehicle may fail emissions tests due to increased emissions resulting from incorrect engine adjustments.
How to Fix P0073 2015 GMC Sierra
- Diagnose the Issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the AAT sensor, wiring, and connectors.
- Replace the AAT Sensor: If the sensor is found to be faulty, replace it with a new one following manufacturer guidelines.
- Repair Damaged Wiring: Repair or replace any damaged wiring or connectors in the AAT sensor circuit.
- Clear DTCs: Clear the DTC from the ECM memory using a scan tool after completing the repair.
- Test Drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the check engine light does not reappear.
Cost to Fix P0073 2015 GMC Sierra
The typical repair costs for addressing the P0073 code on a 2015 GMC Sierra may range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Factors such as location, vehicle make and model, and engine type can also influence the final repair costs. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances.
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Frequently Asked Questions about P0073 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code P0073 in a 2015 GMC Sierra related to the Ambient Air Temperature Sensor Circuit High Voltage?
- Common symptoms may include inaccurate temperature readings on the vehicle's display, poor fuel efficiency, and potential issues with the air conditioning system.
2. What are the possible causes of OBDII code P0073 in a 2015 GMC Sierra?
- The code P0073 can be triggered by a faulty ambient air temperature sensor, damaged wiring or connectors related to the sensor, or issues with the sensor's circuit.
3. How can I diagnose the Ambient Air Temperature Sensor Circuit High Voltage issue in my 2015 GMC Sierra?
- Diagnosing the problem involves checking the ambient air temperature sensor for any physical damage, testing the sensor's electrical connections, and inspecting the wiring for any signs of wear or corrosion.
4. Can I drive my 2015 GMC Sierra with OBDII code P0073 triggered?
- It is generally not recommended to drive with the code P0073 active, as it can lead to inaccurate readings and potential issues with the vehicle's performance. It is best to address the problem promptly.
5. How can I repair OBDII code P0073 in my 2015 GMC Sierra?
- Repairing the code P0073 involves replacing the ambient air temperature sensor if it is faulty, repairing or replacing damaged wiring or connectors, and clearing the error code with an OBDII scanner.
6. Is it possible to reset the OBDII code P0073 in a 2015 GMC Sierra without fixing the underlying issue?
- While you can clear the error code temporarily with an OBDII scanner, the code is likely to return if the root cause of the Ambient Air Temperature Sensor Circuit High Voltage problem is not addressed.
7. How much does it typically cost to repair OBDII code P0073 in a 2015 GMC Sierra?
- The cost of repairing the code P0073 can vary depending on the specific issue, but it may involve parts and labor expenses totaling a few hundred dollars at a dealership or repair shop.
8. Can extreme weather conditions affect the triggering of OBDII code P0073 in a 2015 GMC Sierra?
- Extreme temperatures can potentially impact the ambient air temperature sensor's performance and lead to the triggering of code P0073. It is essential to keep the sensor and its surroundings clean and well-maintained.
9. Will fixing OBDII code P0073 improve the overall performance of my 2015 GMC Sierra?
- Addressing the Ambient Air Temperature Sensor Circuit High Voltage issue indicated by code P0073 can help restore accurate temperature readings, improve fuel efficiency, and ensure proper operation of the vehicle's systems.
10. How often should the ambient air temperature sensor be inspected in a 2015 GMC Sierra to prevent OBDII code P0073 from recurring?
- It is advisable to include the ambient air temperature sensor in regular vehicle maintenance checks to detect any potential issues early and prevent the reoccurrence of code P0073.
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