B11C3 - Front Mode Door 1 Travel Range Too Small
B11C3 Possible Causes
- Mode Door Binding
- Faulty Mode Door Actuator
- Mode Door Actuator harness is open or shorted
- Mode Door Actuator circuit poor electrical connection
- Faulty A/C Heater Module
First diagnose B11C3 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 connector's pins.
Cost of diagnosing the B11C3 code
Labor: 1.0The cost of diagnosing the B11C3 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
B11C3 Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B11c3 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. For further information.
B11C3 More InformationNeed more information on how to fix the B11C3 code?
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B11C3 Information for specific makes
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