AutoCodes – RAM – B104E RAM

B104E RAM 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 RAM 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 2,171

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

What does this mean?

What are the Possible Causes of the DTC B104E RAM?

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 RAM?

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 RAM 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 RAM Code

1. What are the common symptoms of OBDII code B104E RAM Blend Door Control Circuit High?

- Common symptoms include inconsistent air temperatures coming from the HVAC system, the inability to regulate interior temperature effectively, and potential issues with the blend door's movement.

2. What are the possible causes of the B104E RAM Blend Door Control Circuit High code?

- The code may be triggered by a faulty blend door actuator, a damaged blend door, wiring issues in the blend door circuit, or a malfunctioning HVAC control module.

3. How can I diagnose the B104E RAM code related to the Blend Door Control Circuit High?

- Diagnosing this code typically involves checking the blend door actuator for proper operation, inspecting the blend door for any obstructions, and testing the wiring and connections in the blend door circuit.

4. Can I continue driving my vehicle with the B104E RAM code active?

- While it may be possible to drive with the code present, it is not recommended as it can lead to discomfort due to inconsistent temperature control and potential further damage to the HVAC system.

5. What are the repair options for addressing the B104E RAM Blend Door Control Circuit High code?

- Repair options may include replacing the blend door actuator, repairing or replacing the blend door, addressing any wiring issues, or recalibrating the HVAC system.

6. How can I prevent the B104E RAM code from reoccurring in the future?

- To prevent the code from reoccurring, it's essential to address any underlying issues properly, perform regular maintenance on the HVAC system, and follow recommended service intervals for the vehicle.

7. Is it possible to reset the B104E RAM code without addressing the underlying issue?

- While clearing the code may temporarily reset the system, it is crucial to address the root cause of the issue to prevent further problems with the blend door control circuit.

8. Can a DIY enthusiast repair the B104E RAM Blend Door Control Circuit High issue?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address the issue by following repair guides, but it is recommended to consult a professional for complex repairs.

9. How long does it typically take to repair the B104E RAM code related to the Blend Door Control Circuit High?

- The repair time can vary based on the specific issue, but it may take anywhere from an hour to several hours to diagnose and address the problem effectively.

10. Will the B104E RAM code affect my vehicle's overall performance?

- While the code primarily relates to the HVAC system, continued neglect of the issue can impact overall comfort and potentially lead to further complications with the vehicle's heating and cooling systems.