B105C Dodge Code - Recirculation Door Travel Range Too Small
Quick Answer
After the initial installation of the A/C Heater Module, the controller is calibrated to each individual blend/mode door actuator. Common causes include Binding Recirculation Door, Faulty Recirculation Door Actuator, Recirculation Door Actuator harness is open or shorted. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B105C Dodge indicates Recirculation Door Travel Range Too Small.
- Common causes
- Common causes include Binding Recirculation Door, Faulty Recirculation Door Actuator, Recirculation Door Actuator harness is open or shorted.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B105C Dodge Description
What are the Possible Causes of the DTC B105C Dodge?
- 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 DTC B105C Dodge?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B105C Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B105C Dodge Code
1. What does the OBDII code B105C on a Dodge indicate?
The B105C code on a Dodge indicates that the recirculation door in the HVAC system has a travel range that is too small, meaning it isn't opening or closing as much as expected.
2. What are common symptoms of code B105C in a Dodge?
Symptoms of the B105C code may include insufficient HVAC performance, inability to switch between recirculated and fresh air, and possibly an audible clicking noise from the dashboard when trying to change this setting.
3. What causes the B105C code to appear in a Dodge vehicle?
This code can be triggered by several issues, including a blocked or stuck recirculation door, a faulty actuator, or problems with the control module or associated wiring.
4. How can I fix the B105C code in my Dodge?
To fix the B105C code, check and clear any obstructions in the recirculation door's path, replace the actuator if it's faulty, and inspect the wiring and connectors for damage or disconnections. Resetting the control module may also be necessary after repairs.
5. Is it safe to drive my Dodge with the B105C code?
While it's generally safe to drive with this code, the comfort of the vehicle may be compromised due to issues with controlling cabin air recirculation. In some climates, this can lead to fogged windows or uncomfortable cabin temperatures.
6. What tools are needed to diagnose the B105C code on a Dodge?
Diagnosing the B105C code typically requires a scan tool capable of reading B codes, a multimeter for checking electrical connections, and basic hand tools to access the recirculation door and actuator.
7. How does the recirculation door function in a Dodge HVAC system?
The recirculation door in a Dodge HVAC system controls whether air is drawn from inside the cabin or from outside. It moves to switch between these modes, helping to control cabin temperature and air quality.
8. Can a B105C code affect the HVAC system's efficiency?
Yes, if the recirculation door is not functioning properly, it can lead to less efficient heating or cooling as the system may not be able to effectively manage cabin air recirculation, leading to increased load on the HVAC system.
9. What preventive measures can be taken to avoid the B105C code in a Dodge?
Regular maintenance checks of the HVAC system, ensuring the recirculation door and its components are clean and free from obstructions, and checking the functionality of the actuator periodically can help prevent this issue.
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