B0158 CHEVROLET - Ambient Air Temperature Sensor Circuit
Tech notesB0158 02: Ambient Air Temperature Sensor Circuit Short to Ground
B0158 05: Ambient Air Temperature Sensor Circuit High Voltage/Open
B0158 Chevrolet DescriptionAir temperature sensors allow the Heating, Ventilation, and Air Conditioning (HVAC) Control Module to monitor the temperature of the discharge air in the HVAC ducts. The module applies 5 volts to internal input resistors that are connected to the signal circuits of the air temperature sensors. The module provides ground to the air temperature sensors through the low reference circuit. The HVAC control module monitors the voltage drops across the air temperature sensors and uses the inputs for automatic control calculations. When the duct air temperatures are cold, the resistances of the sensors are high and the voltage signals are high. When the duct air temperatures are hot, the resistances of the sensors are low and the voltage signals are low. The HVAC control module converts the voltage values to count values where 1 volt is approximately equal to 51 counts.
Need more help?Get the B0158 Chevrolet code diagnosed by a professional: Find a repair shop in you area
B0158 CHEVROLET CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the B0158 Chevrolet code? Have you replaced any parts?
Any information is appreciated. Thanks