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B0158 2017 GMC Sierra Code - Ambient Air Temperature Sensor Circuit

Quick Answer

The B0158 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Ambient Air Temperature Sensor Circuit. Common causes include Faulty ambient air temperature sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination affecting sensor operation. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
B0158 2017 GMC Sierra indicates Ambient Air Temperature Sensor Circuit.
Common causes
Common causes include Faulty ambient air temperature sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or contamination affecting sensor operation.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B0158 2017 GMC Sierra Description

The B0158 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Ambient Air Temperature Sensor Circuit. This sensor is responsible for measuring the outside air temperature and providing this information to the vehicle's engine control module (ECM). The ECM uses this data to adjust various parameters such as fuel mixture, ignition timing, and emissions control strategies to optimize engine performance and efficiency.

OBDII Code B0158 2017 GMC Sierra - Ambient Air Temperature Sensor Circuit
B0158 2017 GMC Sierra Code - Ambient Air Temperature Sensor Circuit

Common Causes of B0158 2017 GMC Sierra

  1. Faulty ambient air temperature sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or contamination affecting sensor operation
  4. ECM software issues
  5. Electrical system faults

Symptoms of B0158 2017 GMC Sierra

  1. Inaccurate outside temperature display on the dashboard
  2. Poor fuel economy
  3. Engine running too rich or too lean
  4. Climate control system not maintaining desired cabin temperature
  5. Check Engine Light illuminated on the dashboard

How to Fix B0158 2017 GMC Sierra

  1. Begin by locating the ambient air temperature sensor, typically located behind the front grille or in the front bumper area.
  2. Inspect the sensor and wiring for any visible damage, corrosion, or loose connections.
  3. Test the sensor using a multimeter to check for proper resistance values within manufacturer specifications.
  4. If the sensor is faulty, replace it with a new OEM part and ensure proper installation.
  5. Clear the DTC using a scan tool and perform a test drive to verify that the issue has been resolved.

Cost to Fix B0158 2017 GMC Sierra

The cost of repairing the Ambient Air Temperature Sensor Circuit can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the price of a new ambient air temperature sensor ranges from $20 to $50, while the labor cost for diagnosis and replacement can range from $100 to $200. Overall, the total repair cost for this issue may fall between $120 and $250. It is advisable to consult with a trusted mechanic or dealership for a more accurate estimate based on your vehicle's make and model. Keep in mind that additional costs may apply if other components need to be replaced or if further diagnosis is required.

What does this mean?

Tech Notes for B0158 2017 GMC Sierra

B0158:02 Ambient Air Temperature Sensor Circuit Short to Ground

B0158:05 Ambient Air Temperature Sensor Circuit High Voltage/Open











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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 B0158 2017 GMC Sierra Code

1. What are the common symptoms of a faulty ambient air temperature sensor circuit (OBDII code B0158) in a 2017 GMC Sierra?

The common symptoms include inaccurate temperature readings on the dashboard, issues with climate control system operation, and potential impact on fuel efficiency.

2. What are the possible causes of OBDII code B0158 in a 2017 GMC Sierra?

The code B0158 can be triggered by a faulty ambient air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's calibration.

3. How can I diagnose the ambient air temperature sensor circuit issue in my 2017 GMC Sierra?

Diagnosis involves checking the sensor for physical damage, inspecting the wiring and connectors for any signs of wear or corrosion, and using a multimeter to test the sensor's resistance and voltage output.

4. Can I drive my 2017 GMC Sierra with OBDII code B0158 without causing further damage?

While the vehicle may still be operable with this code, it is recommended to address the issue promptly to prevent any potential impact on the vehicle's performance and fuel efficiency.

5. How can I repair the ambient air temperature sensor circuit problem in my 2017 GMC Sierra?

Repair options include replacing the faulty ambient air temperature sensor, repairing or replacing damaged wiring/connectors, and resetting the system to clear the trouble code.

6. Is it possible to reset OBDII code B0158 in a 2017 GMC Sierra without fixing the underlying issue?

Resetting the code without addressing the root cause will only temporarily clear the code, as it will likely reappear once the issue persists.

7. Can extreme weather conditions affect the accuracy of the ambient air temperature sensor in a 2017 GMC Sierra?

Yes, extreme temperatures or exposure to elements such as water or debris can impact the sensor's performance and accuracy.

8. Will fixing OBDII code B0158 in my 2017 GMC Sierra improve fuel efficiency?

Correcting issues related to the ambient air temperature sensor circuit can help restore accurate readings and improve the vehicle's fuel efficiency over time.

9. How much does it typically cost to repair the ambient air temperature sensor circuit issue in a 2017 GMC Sierra?

Costs can vary depending on the extent of the problem, but replacing the sensor or repairing the wiring/connectors may range from $50 to $200 in parts and labor.

10. Are there any preventive maintenance tips to avoid OBDII code B0158 in a 2017 GMC Sierra?

Regularly inspecting the ambient air temperature sensor, ensuring proper wiring connections, and keeping the sensor clean from debris can help prevent issues that trigger this trouble code.

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