P0073 2018 GMC Sierra Code - Ambient Air Temperature Sensor Circuit High Voltage
Quick Answer
The Engine Control Module (ECM) monitors the ambient air temperature sensor with a low reference circuit and signal circuit. Common causes include Faulty Ambient Air Temperature 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 2018 GMC Sierra indicates Ambient Air Temperature Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty Ambient Air Temperature 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 2018 GMC Sierra Description
What are the Possible Causes of the DTC P0073 2018 GMC Sierra?
- Faulty Ambient Air Temperature Sensor
- Ambient Air Temperature Sensor harness is open or shorted
- Ambient Air Temperature Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0073 2018 GMC Sierra?
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 2018 GMC Sierra 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 P0073 2018 GMC Sierra code?
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Frequently Asked Questions about P0073 2018 GMC Sierra Code
1. What are the common symptoms of OBDII code P0073 (Ambient Air Temperature Sensor Circuit High Voltage) in a 2018 GMC Sierra?
Symptoms may include incorrect temperature readings on the dashboard, issues with the HVAC system, and potential illumination of the check engine light.
2. What typically causes the OBDII code P0073 in a 2018 GMC Sierra?
The code is often triggered by a malfunction in the ambient air temperature sensor, which may be due to a faulty sensor, damaged wiring, or poor electrical connections.
3. How serious is the OBDII code P0073 (Ambient Air Temperature Sensor Circuit High Voltage) in a 2018 GMC Sierra?
While the code itself may not cause immediate drivability issues, it can affect the accuracy of temperature readings and impact the performance of certain vehicle systems.
4. Is it safe to continue driving with the OBDII code P0073 in a 2018 GMC Sierra?
It is generally safe to drive with this code, but it is recommended to address the underlying issue as soon as possible to prevent potential complications or further damage.
5. How can I diagnose the cause of OBDII code P0073 in my 2018 GMC Sierra?
Diagnosis typically involves inspecting the ambient air temperature sensor, checking the sensor's wiring and connections, and using a multimeter to test for proper voltage readings.
6. Can I fix the OBDII code P0073 in my 2018 GMC Sierra myself?
If you have experience with automotive repairs and access to the necessary tools, you may be able to replace the ambient air temperature sensor or repair the wiring yourself. Otherwise, it's advisable to seek professional help.
7. What are some repair tips for addressing OBDII code P0073 in a 2018 GMC Sierra?
Ensure the sensor is securely mounted, check for any signs of corrosion or damage in the wiring, and clear the trouble code after making any repairs or replacements.
8. Will resetting the OBDII code P0073 in a 2018 GMC Sierra make it go away permanently?
Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the fault code is not addressed, the code is likely to reappear.
9. What is the approximate cost to repair OBDII code P0073 in a 2018 GMC Sierra at a professional auto repair shop?
The cost can vary depending on the specific cause of the issue, but replacing the ambient air temperature sensor or repairing the wiring may range from $100 to $300, including parts and labor.
10. Can extreme weather conditions affect the ambient air temperature sensor and trigger OBDII code P0073 in a 2018 GMC Sierra?
Yes, extreme temperatures or exposure to harsh environmental conditions can potentially affect the sensor's performance and lead to the triggering of the code.
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