AutoCodes – Acura – B1055 Acura

B1055 Acura 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 Acura 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 4,572

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

What does this mean?

What are the Possible Causes of the DTC B1055 Acura?

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 Acura?

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 Acura 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 Acura code?

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

Need Help with the Code?

Get the B1055 Acura 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 Acura Code

1. What are the common symptoms of OBDII code B1055 in an Acura related to Relay Control Module Lost Communication With MICU?

- Common symptoms include non-functioning interior lights, power window issues, and malfunctioning keyless entry system.

2. What are the possible causes of OBDII code B1055 in an Acura?

- The code may be triggered by a faulty relay control module, a communication error with the Multiplex Integrated Control Unit (MICU), or wiring issues.

3. How can I diagnose the cause of OBDII code B1055 in my Acura?

- Diagnosis involves checking the connections between the relay control module and MICU, testing the relay module for functionality, and inspecting the wiring for any damage.

4. Can a DIY enthusiast repair OBDII code B1055 in an Acura?

- Depending on the specific issue, a DIY enthusiast may be able to repair the problem by replacing the faulty relay control module or fixing wiring issues. However, complex electrical work may require professional assistance.

5. Is it safe to continue driving with OBDII code B1055 in my Acura?

- It is not recommended to continue driving with this code present, as it may lead to further electrical malfunctions in the vehicle.

6. How much does it typically cost to repair OBDII code B1055 in an Acura?

- The cost of repair can vary depending on the specific issue causing the code, but it may range from $100 to $500 for parts and labor.

7. Can resetting the OBDII code B1055 in my Acura make it disappear permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear.

8. Are there any preventive measures to avoid OBDII code B1055 in an Acura?

- Regular maintenance checks, inspecting the electrical system, and addressing any warning signs promptly can help prevent issues leading to this OBDII code.

9. What other systems in an Acura may be affected by OBDII code B1055?

- In addition to the relay control module and MICU, other systems like the power door locks, security system, and accessory power outlets may be impacted by this code.

10. How long does it typically take to repair OBDII code B1055 in an Acura?

- The repair time can vary depending on the exact cause of the issue and the expertise of the technician, but it may take a few hours to a full day to diagnose and fix the problem.