AutoCodes – Honda – B1055 Honda

B1055 Honda Code - Relay Control Module Lost Communication With MICU

Quick Answer

The Relay Control Module monitors the Multiplex Control Unit Module (MICU). Common causes include Faulty Multiplex Control Unit Module (MICU), Multiplex Control Unit Module (MICU) harness is open or shorted, Multiplex Control Unit Module (MICU) circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: B1055 Honda indicates Relay Control Module Lost Communication With MICU.
Common causes: Common causes include Faulty Multiplex Control Unit Module (MICU), Multiplex Control Unit Module (MICU) harness is open or shorted, Multiplex Control Unit Module (MICU) circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 6,852

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1055 Honda Description

The Relay Control Module monitors the Multiplex Control Unit Module (MICU). The Relay Control Module sets the OBDII code when the Multiplex Control Unit Module (MICU) is not to factory specifications.

OBDII Code B1055 Honda - Relay Control Module Lost Communication With MICU - AutoCodes.com — B1055 Honda Code - Relay Control Module Lost Communication With MICU

What does this mean?

What are the Possible Causes of the DTC B1055 Honda?

Faulty Multiplex Control Unit Module (MICU)
Multiplex Control Unit Module (MICU) harness is open or shorted
Multiplex Control Unit Module (MICU) circuit poor electrical connection
Faulty Relay Control Module

How to Fix the DTC B1055 Honda?

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 B1055 Honda 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.

Need more information about the B1055 Honda code?

Need more information on how to fix the B1055 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1055 Honda code diagnosed by a professional: Find a repair shop in your area

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 B1055 Honda Code

1. What are the common symptoms of OBDII code B1055 in a Honda vehicle?

The common symptoms include issues with power windows, door locks, and other accessories controlled by the MICU.

2. What does the OBDII code B1055 Honda indicate?

The code B1055 means that the Relay Control Module has lost communication with the Multiplex Integrated Control Unit (MICU) in the vehicle.

3. What are the possible causes of the Relay Control Module losing communication with the MICU?

Possible causes include wiring issues, a faulty relay control module, a defective MICU, or a communication network problem within the vehicle.

4. How can I diagnose the cause of OBDII code B1055 in my Honda?

Diagnosing the issue requires using a diagnostic scan tool to communicate with the vehicle's systems, checking the wiring for any damage, and testing the relay control module and MICU for functionality.

5. Can I continue to drive my Honda with OBDII code B1055 present?

It is not recommended to continue driving the vehicle with this code as it can lead to further electrical malfunctions and potential safety hazards.

6. How can I repair OBDII code B1055 in my Honda?

Repairing the issue involves addressing the root cause, which may include repairing or replacing damaged wiring, replacing the faulty relay control module or MICU, or resolving any communication network problems.

7. Is it necessary to reset the OBDII code B1055 after making repairs?

Yes, it is important to reset the code using a diagnostic scan tool after making repairs to clear the fault code and ensure that the issue has been resolved.

8. Can a DIY enthusiast fix OBDII code B1055 in a Honda?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the underlying cause of the code may require advanced knowledge and specialized tools, so it is recommended to seek professional help if needed.

9. How much does it typically cost to repair OBDII code B1055 in a Honda?

The cost of repairing OBDII code B1055 can vary depending on the specific cause of the issue, the parts needed for replacement, and labor costs. It is advisable to consult a mechanic for an accurate estimate.

10. Are there any preventive measures to avoid OBDII code B1055 in the future?

Regular vehicle maintenance, checking the electrical system for any signs of wear or damage, and addressing any issues promptly can help prevent OBDII code B1055 and other related problems in the future.