B105A Possible Causes
- harness is open or shorted
- circuit poor electrical connection
First diagnose B105A code
Check 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 terminals.
B105A Tech NotesB105A:12 Cabin Temperature Sensor Fan Circuit Short To Battery
B105A:14 Cabin Temperature Sensor Fan Circuit Short To Ground or Open
Cost of diagnosing the B105A code
Labor: 1.0The cost of diagnosing the B105A code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
B105A Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B105A MeaningThe in-vehicle temperature and humidity sensor contains a thermistor and a sensing element which separately measures the in-vehicle air temperature and the humidity, then sends those readings to the FCIM. The in-vehicle temperature and humidity sensor has an electric fan within the sensor that draws in-vehicle air across the two sensing elements. The FCIM may adjust the actuator doors based on the in-vehicle temperature and humidity sensor information to maintain the desired humidity and temperature of the passenger cabin air. The Front Controls Interface Module (FCIM) monitors the Cabin Temperature Sensor Fan. The FCIM sets the OBDII code when the Cabin Temperature Sensor Fan is not to factory specifications.
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