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B0158 2015 GMC Sierra Code - Ambient Air Temperature Sensor Circuit

Quick Answer

The B0158 code for a 2015 GMC Sierra refers to a malfunction in the ambient air temperature sensor circuit. Common causes include Faulty ambient air temperature sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting the sensor's 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 2015 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 debris affecting the sensor's 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 2015 GMC Sierra Description

The B0158 code for a 2015 GMC Sierra refers to a malfunction in the ambient air temperature sensor circuit. The ambient air temperature sensor is a vital component of the vehicle's climate control system, as it measures the outside air temperature and sends this information to the HVAC system for proper regulation of interior temperature. When the sensor circuit fails, it can lead to inaccurate temperature readings, affecting the performance of the HVAC system and potentially other systems in the vehicle.

OBDII Code B0158 2015 GMC Sierra - Ambient Air Temperature Sensor Circuit
B0158 2015 GMC Sierra Code - Ambient Air Temperature Sensor Circuit

Common Causes of B0158 2015 GMC Sierra

  1. Faulty ambient air temperature sensor.
  2. Damaged wiring or connectors in the sensor circuit.
  3. Corrosion or debris affecting the sensor's operation.
  4. Electrical issues in the climate control system.
  5. Software glitches in the vehicle's onboard computer system.

Symptoms of B0158 2015 GMC Sierra

  1. Incorrect temperature readings on the climate control display.
  2. Inconsistent heating or cooling performance from the HVAC system.
  3. Inability to defrost or defog the windshield effectively.
  4. Erratic behavior of the climate control system.
  5. Check Engine Light illuminated on the dashboard.

How to Fix B0158 2015 GMC Sierra

  1. Begin by locating the ambient air temperature sensor on the vehicle.
  2. Inspect the sensor, wiring, and connectors for any visible damage or corrosion.
  3. Test the sensor using a multimeter to check for proper resistance readings.
  4. Replace the ambient air temperature sensor if it is found to be faulty.
  5. Clear the diagnostic trouble codes from the vehicle's onboard computer to reset the system.

Cost to Fix B0158 2015 GMC Sierra

The cost of repairing the ambient air temperature sensor circuit can vary depending on the extent of the issue and the specific components that need to be replaced. In general, the cost of a new ambient air temperature sensor can range from $20 to $100, while the labor cost for the repair can range from $80 to $150 per hour. Overall, the total repair cost for this issue is typically between $100 and $300. It's important to consider that actual repair costs may differ based on factors such as the vehicle's make and model, the technician's labor rates, and any additional repairs that may be necessary.

What does this mean?

Tech Notes for B0158 2015 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 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B0158 on a 2015 GMC Sierra?

The common symptoms of code B0158 include inaccurate ambient air temperature readings on the vehicle's display, incorrect climate control operation, and potential triggering of the check engine light.

2. What does the Ambient Air Temperature Sensor Circuit do in a 2015 GMC Sierra?

The Ambient Air Temperature Sensor Circuit monitors the outside air temperature to help regulate the vehicle's climate control system and provide accurate temperature readings to the driver.

3. What are the possible causes of OBDII code B0158 on a 2015 GMC Sierra?

Possible causes of code B0158 include a faulty ambient air temperature sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the climate control system.

4. How can I diagnose the Ambient Air Temperature Sensor Circuit issue on my 2015 GMC Sierra?

Diagnosing a B0158 code involves checking the ambient air temperature sensor for proper operation, inspecting the sensor wiring and connectors for any damage, and testing the climate control system for any related malfunctions.

5. Can I drive my 2015 GMC Sierra with an active B0158 fault code?

It is generally safe to drive your vehicle with an active B0158 fault code, but you may experience issues with the climate control system and inaccurate temperature readings. It is recommended to address the issue promptly.

6. How can I repair the Ambient Air Temperature Sensor Circuit on my 2015 GMC Sierra?

Repairing the Ambient Air Temperature Sensor Circuit may involve replacing the faulty ambient air temperature sensor, repairing or replacing damaged wiring or connectors, or addressing any underlying issues in the climate control system.

7. Can a DIY enthusiast fix the B0158 code on a 2015 GMC Sierra?

While some DIY enthusiasts may have the skills to diagnose and repair the Ambient Air Temperature Sensor Circuit issue, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved correctly.

8. How do I reset the check engine light after fixing OBDII code B0158 on my 2015 GMC Sierra?

Once the Ambient Air Temperature Sensor Circuit issue is fixed, the check engine light can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the error code.

9. Are there any preventative maintenance tips to avoid OBDII code B0158 on a 2015 GMC Sierra?

To prevent OBDII code B0158, it's essential to perform regular vehicle inspections, address any sensor or wiring issues promptly, and ensure proper maintenance of the climate control system in your 2015 GMC Sierra.

10. How much does it cost to repair the Ambient Air Temperature Sensor Circuit issue on a 2015 GMC Sierra?

The cost of repairing the Ambient Air Temperature Sensor Circuit issue can vary depending on the extent of the problem, the parts needed for replacement, and labor costs. It is advisable to obtain quotes from different mechanics or service centers for an accurate estimate.

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