Engine-Codes - Generic - B104D

B104D - Blend Door Control Circuit Low

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B104D Possible Causes

  • Faulty Blend Door Actuator
  • Blend Door Actuator harness is open or shorted
  • Blend Door Actuator circuit poor electrical connection
  • Faulty Heating, Ventilation, & Air Conditioning (HVAC) Module

How is the B104D code repair?

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 B104D code

Labor: 1.0

The cost to diagnose the B104D code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

B104D Meaning

The Powertrain Control Module (PCM) factors the Blend Door position and Blower Motor speed information into the coolant temperature modeling. This information is received as a raw voltage signal from the Heating, Ventilation, & Air Conditioning (HVAC) Module over the Can Bus.

More Information

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Information for specific makes

  • B104D CHRYSLER Blend Door Control Circuit Low
  • B104D DODGE Blend Door Control Circuit Low
  • B104D FORD Crash Zone Sensor And Other Sensor Circuits Short To Power Supply
  • B104D JEEP Blend Door Control Circuit Low
  • B104D LINCOLN Crash Zone Sensor And Other Sensor Circuits Short To Power Supply
  • B104D MAZDA Crash Zone Sensor And Other Sensor Circuits Short To Power Supply
  • B104D MERCURY Crash Zone Sensor And Other Sensor Circuits Short To Power Supply
  • B104D RAM Blend Door Control Circuit Low

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