Engine-Codes - Ram - B105D RAM

B105D RAM Code - Recirculation Door Travel Range Too Large

- Code Popularity: 1,373 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the B105D RAM Code?

  • 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 to Fix the B105D RAM Code?

Start by checking 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.

|What is the cost to diagnose the B105D RAM code?

Labor: 1.0

The cost to diagnose the B105D RAM 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.

|What are B105D RAM code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the B105D RAM Code Mean?

After 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.

Recirculation Door Travel Range Too Large

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