AutoCodes – Chevrolet – P0073 2017 Chevrolet Silverado

P0073 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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.

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Code Popularity 1,175

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 16, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0073 2017 Chevrolet Silverado Description

The Engine Control Module (ECM) monitors the ambient air temperature sensor with a low reference circuit and signal circuit. The ECM monitors the voltage drop across the sensor, which is inversely proportional to temperature. When the ambient air temperature is cold, the resistance of the sensor is high. When the ambient air temperature is warm, the resistance of the sensors is low. The engine control module converts the voltage value to a temperature value and sends the value to the Display Module via serial data. The Display Module displays the temperature. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the Ambient Air Temperature Sensor signal is less than -40°C (-40°F).

OBDII Code P0073 2017 Chevrolet Silverado - Ambient Air Temperature Sensor Circuit High Voltage - AutoCodes.com — P0073 2017 Chevrolet Silverado Code - Ambient Air Temperature Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0073 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado code?

Need more information on how to fix the P0073 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0073 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0073 on a 2017 Chevrolet Silverado?

- Common symptoms include inaccurate temperature readings on the dashboard, rough engine performance, and potential issues with the HVAC system.

2. What does the Ambient Air Temperature Sensor do in a 2017 Chevrolet Silverado?

- The Ambient Air Temperature Sensor measures the outside air temperature and sends this information to the vehicle's computer to help regulate various systems.

3. What are the possible causes of the Ambient Air Temperature Sensor Circuit High Voltage error code?

- Possible causes include a faulty ambient air temperature sensor, damaged wiring or connectors, electrical issues, or a malfunctioning sensor circuit.

4. How can I diagnose the cause of the P0073 code on my 2017 Chevrolet Silverado?

- You can start by visually inspecting the sensor and its wiring for any visible damage. Using a multimeter to test the sensor's resistance and voltage output can help pinpoint the issue.

5. Is it safe to continue driving my Chevrolet Silverado with the P0073 trouble code?

- It is generally safe to drive with this code, but it's recommended to address the underlying issue as soon as possible to prevent any potential long-term damage to the vehicle.

6. Can I repair the Ambient Air Temperature Sensor Circuit High Voltage issue on my 2017 Silverado myself?

- If you have experience working on vehicles and access to the necessary tools, you may be able to repair this issue yourself by replacing the ambient air temperature sensor or fixing any damaged wiring.

7. Will resetting the trouble codes make the P0073 code disappear permanently?

- Resetting the trouble codes may temporarily clear the P0073 code, but if the underlying issue is not resolved, the code is likely to reappear after driving the vehicle for some time.

8. How much does it typically cost to repair the Ambient Air Temperature Sensor Circuit High Voltage error on a 2017 Chevrolet Silverado?

- The cost of repairing this issue can vary depending on the root cause, but it may range from $100 to $300 for parts and labor at a dealership or repair shop.

9. Can extreme weather conditions affect the performance of the Ambient Air Temperature Sensor in my Chevrolet Silverado?

- Yes, extreme hot or cold weather conditions can sometimes cause the sensor to malfunction or provide inaccurate readings, leading to the P0073 trouble code.

10. Will fixing the Ambient Air Temperature Sensor Circuit High Voltage problem improve my Chevrolet Silverado's fuel efficiency?

- While addressing this issue may improve the overall performance of your vehicle, it may not have a direct impact on fuel efficiency unless the faulty sensor was causing the engine to run inefficiently.