B105D - Recirculation Door Travel Range Too Large
B105D Possible Causes
- Binding Recirculation Door
- Faulty Recirculation Door Actuator
- Recirculation Door Actuator harness is open or shorted
- Recirculation Door Actuator circuit poor electrical connection
- Faulty A/C Heater Module
How do I fix code B105D?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 connector's pins.
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Cost of diagnosing the B105D code
Labor: 1.0The cost of diagnosing the B105D 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.
- Engine Light ON (or Service Engine Soon Warning Light)
B105D DescriptionAfter the initial installation of the A/C Heater Module, the controller is calibrated to each individual blend/mode door actuator. These calibrations are stored as in the number of pulses it takes to move the door from one stop to another. The A/C Heater Module drives the Door Actuators by the use of Door Driver circuit and a Common Door Driver circuit and monitors all door actuator pulses to detect door movement in both directions. Most of the door actuators share a common door driver circuit but each door actuator has its own unique driver circuit. Due to shared circuitry, similar Diagnostic Trouble Codes (DTCs) can set at the same time for multiple actuators depending upon the type of circuit malfunction, its location, and the direction the actuator is moving when the malfunction is present.
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