B0158 GMC Code - Ambient Air Temperature Sensor Circuit
Quick Answer
The Ambient Air Temperature Sensor is located behind the grille. 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 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 GMC indicates Ambient Air Temperature Sensor Circuit.
- 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
- 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.
Code B0158 GMC Description
What are the Possible Causes of the DTC B0158 GMC?
- Faulty Ambient Air Temperature Sensor
- Ambient Air Temperature Sensor harness is open or shorted
- Ambient Air Temperature Sensor circuit poor electrical connection
- Faulty Instrument Cluster
How to Fix the DTC B0158 GMC?
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.
Code Tech Notes
B0158:05 Ambient Air Temperature Sensor Circuit High Voltage/Open
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B0158 GMC 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 B0158 GMC code?
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Information for Specific GMC Models
- B0158 2014 GMC Sierra — Ambient Air Temperature Sensor Circuit
- B0158 2015 GMC Sierra — Ambient Air Temperature Sensor Circuit
- B0158 2016 GMC Sierra — Ambient Air Temperature Sensor Circuit
- B0158 2017 GMC Sierra — Ambient Air Temperature Sensor Circuit
- B0158 2018 GMC Sierra — Ambient Air Temperature Sensor Circuit
Frequently Asked Questions about B0158 GMC Code
1. What does the OBDII code B0158 indicate on a GMC vehicle?
Code B0158 indicates a fault in the Ambient Air Temperature Sensor Circuit, suggesting that the sensor or circuit is not performing within the expected parameters.
2. What are the common symptoms of code B0158 in a GMC?
Symptoms may include incorrect outside temperature readings displayed on the dash, possible effects on the HVAC system's efficiency, and sometimes issues with automatic climate control.
3. What causes the OBDII code B0158 to appear on a GMC?
Common causes include a faulty ambient air temperature sensor, damaged wiring or connectors in the sensor circuit, or a problem with the control module receiving the sensor's data.
4. How do I fix the B0158 code on a GMC?
Fixing this code involves inspecting and potentially replacing the ambient air temperature sensor, repairing any damaged wires or connectors, and ensuring the control module is functioning correctly.
5. Where is the ambient air temperature sensor located in a GMC vehicle?
The ambient air temperature sensor is typically located in front of the radiator or behind the front grille, to accurately gauge the temperature of the air entering the engine and cabin.
6. Can I drive my GMC with the B0158 code active?
While you can drive your vehicle, the inaccurate temperature readings may affect the performance of the HVAC system, leading to discomfort or less optimal climate control.
7. Will the B0158 code clear itself once the issue is fixed, or do I need to reset something?
After repairing the issue, the code should clear after a few driving cycles. However, manually clearing the code with an OBDII scanner is often quicker and ensures the repair was successful.
8. What tools are needed to diagnose and repair the B0158 code on a GMC?
Diagnosis and repair commonly require a multimeter for checking electrical continuity, an OBDII scanner to read and clear codes, and basic hand tools to access the sensor.
9. How does the ambient air temperature sensor affect my GMC’s performance?
The sensor primarily affects the HVAC system's operation but can also influence engine management systems, such as fuel mixture and emissions control, under certain conditions.
10. What should I check first if I get a B0158 code on my GMC?
First, check the condition of the ambient air temperature sensor itself and its wiring. Look for any signs of damage, corrosion, or disconnections that could be causing the issue.
Discuss the causes and fixes for B0158 GMC OBDII Code
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