DTC P1B9B Chevrolet
A C Cooldown Test Performance - EVAP Temp Sensor Error
A C Cooldown Test Performance - EVAP Temp Sensor Error
Description
The Evaporator Temperature Sensor is a variable resistor that changes in conjunction with temperature, or otherwise known as a thermistor. The Evaporator Temperature Sensor is located in the HVAC housing downstream of the A C evaporator. The HVAC Module monitors the evaporator temperature by monitoring the voltage change of the Evaporator Temperature Sensor Signal circuit. If the monitored voltage drops below or rises above a predetermined voltage, a Diagnostic Trouble Code (DTC) will set. For further information (Refer to 24 - Heating and Air Conditioning Controls SENSOR, Evaporator Temperature - Operation).
Cause and Solution
EVAPORATOR TEMPERATURE SENSOR DTC PRESENTEVAPORATOR TEMPERATURE SENSORHVAC CONTROL
Video Guide
Diagnostic Info
- DTC Code: P1B9B
- Brand: Chevrolet