Engine-Codes - Gmc - B0158 GMC

B0158 GMC Code - Ambient Air Temperature Sensor Circuit

- Code Popularity: 2,313 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the Code 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 B0158 GMC Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Code B0158 GMC Tech Notes

B0158:02 Ambient Air Temperature Sensor Circuit Short to Ground
B0158:05 Ambient Air Temperature Sensor Circuit High Voltage/Open





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|What is the Cost to Diagnose the Code B0158 GMC?

Labor: 1.0

The cost to diagnose the B0158 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code B0158 GMC Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the B0158 GMC Code Mean?

The Ambient Air Temperature Sensor is located behind the grille. The instrument cluster monitors the ambient air temperature sensor with a low reference circuit and signal circuit. The instrument cluster 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 instrument cluster converts the voltage value to a temperature value and displays the temperature.

Ambient Air Temperature Sensor Circuit

|Need more Information on the B0158 GMC Code?

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|Need Help with the B0158 GMC Code?

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