AutoCodes – Dodge – B104E Dodge

B104E Dodge Code - Blend Door Control Circuit High

Quick Answer

The Powertrain Control Module (PCM) factors the Blend Door position and Blower Motor speed information into the coolant temperature modeling. Common causes include Faulty Blend Door Actuator, Blend Door Actuator harness is open or shorted, Blend Door Actuator circuit poor electrical connection. 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: B104E Dodge indicates Blend Door Control Circuit High.
Common causes: Common causes include Faulty Blend Door Actuator, Blend Door Actuator harness is open or shorted, Blend Door Actuator circuit poor electrical connection.
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.

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Code Popularity 4,052

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B104E Dodge Description

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.

OBDII Code B104E Dodge - Blend Door Control Circuit High - AutoCodes.com — B104E Dodge Code - Blend Door Control Circuit High

What does this mean?

What are the Possible Causes of the DTC B104E Dodge?

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 to Fix the DTC B104E 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 B104E 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B104E Dodge Code

1. What does the OBDII code B104E indicate on a Dodge?

The B104E code indicates that there's an issue with the blend door control circuit, specifically that the circuit voltage is higher than expected. This can affect the vehicle's HVAC system's ability to properly regulate air temperature inside the cabin.

2. What are common symptoms of the B104E code in a Dodge?

Symptoms of the B104E code may include inconsistent or incorrect temperature of the air from the HVAC system, an inability to change the temperature setting, or unusual noises like clicking from the dashboard when adjusting the temperature.

3. What causes the B104E code to be triggered in a Dodge?

The B104E code can be caused by several issues, including a faulty blend door actuator, damaged wiring or connectors in the blend door circuit, or a problem with the HVAC control module.

4. How can I diagnose the B104E code on a Dodge?

Diagnosing the B104E code typically involves using a scan tool to confirm the code and checking the operation of the blend door actuator. Inspecting the electrical wiring and connectors for damage and testing the voltage and ground supply to the actuator are also crucial steps.

5. What are the steps to fix the B104E code on a Dodge?

Repairing the B104E code may involve replacing the faulty blend door actuator, repairing or replacing damaged wiring or connectors, or in some cases, replacing or reprogramming the HVAC control module.

6. Is it safe to drive a Dodge with the B104E code?

While you can still drive your vehicle with the B104E code, you may experience discomfort due to the inability to control the cabin temperature effectively. It's advisable to address the issue promptly to ensure comfort and proper functioning of the HVAC system.

7. Can the B104E code affect the engine performance of my Dodge?

The B104E code itself does not directly affect engine performance; it is related to the HVAC system. However, driving comfort could be compromised, and prolonged disregard of electrical issues could potentially lead to more significant problems.

8. How urgent is it to fix a B104E code on a Dodge?

While not critical for engine performance, it is important to fix the B104E code relatively soon to restore proper function of your vehicleâ€™s HVAC system, ensuring passenger comfort and preventing further damage to the HVAC system components.