Chrysler B1055: Rear Blend Door Control Circuit Open

Is your scanner showing Chrysler B1055?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Chrysler B1055: Rear Blend Door Control Circuit Open

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$250-$350
Can I Still Drive?
:
Yes (Short-term only)

What Does The Chrysler B1055 Code Mean?

After the initial installation of the A/C Heater Control, 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 Control 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.

What Are The Potential Causes Of The Chrysler B1055 Code?

  • Rear Blend Door Driver Circuit Open
  • Common Door Driver Open
  • Rear Blend Door Actuator
  • A/C Heater Control

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Charger Magnum Chrysler 300 A/C Air Conditioning Heater Control Switch Mopar OEM
>>> Dorman 604-029 HVAC Blend Door Actuator

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Chrysler B1055, DTCDECODE.

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