AutoCodes – Honda – B2155 Honda

B2155 Honda Code - Driver Side MPCS Unit Lost Communication With MICU

Quick Answer

The Driver side Multiplex Control System (MPCS) has encountered a communication error with the Multiplex Integrated Control Unit (MICU) and the set the Diagnostic Trouble Code (DTC). Common causes include Faulty Multiplex Integrated Control Unit (MICU), Multiplex Integrated Control Unit (MICU) harness is open or shorted, Multiplex Integrated Control Unit (MICU) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B2155 Honda indicates Driver Side MPCS Unit Lost Communication With MICU.
Common causes: Common causes include Faulty Multiplex Integrated Control Unit (MICU), Multiplex Integrated Control Unit (MICU) harness is open or shorted, Multiplex Integrated Control Unit (MICU) circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,996

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2155 Honda Description

The Driver side Multiplex Control System (MPCS) has encountered a communication error with the Multiplex Integrated Control Unit (MICU) and the set the Diagnostic Trouble Code (DTC).

OBDII Code B2155 Honda - Driver Side MPCS Unit Lost Communication With MICU - AutoCodes.com — B2155 Honda Code - Driver Side MPCS Unit Lost Communication With MICU

What does this mean?

What are the Possible Causes of the DTC B2155 Honda?

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

How to Fix the DTC B2155 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 B2155 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 B2155 Honda code?

Need more information on how to fix the B2155 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2155 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 B2155 Honda Code

1. What are the common symptoms of OBDII code B2155 in a Honda related to the Driver Side MPCS Unit Lost Communication With MICU?

- Common symptoms include non-functioning driver side power window, door locks, or mirror controls.

2. What are the possible causes of OBDII code B2155 in a Honda?

- The code may be triggered by a faulty driver side Multiplex Control System (MPCS) unit or a communication issue with the Multiplex Integrated Control Unit (MICU).

3. How can I diagnose the Driver Side MPCS Unit Lost Communication With MICU issue in my Honda?

- Use a diagnostic scanner to retrieve the specific trouble code (B2155) and conduct a thorough inspection of the MPCS unit wiring and connections.

4. Can a DIY enthusiast repair the OBDII code B2155 issue in a Honda themselves?

- Repairing this issue may require advanced knowledge and specialized tools, so it's recommended to consult a professional automotive technician for proper diagnosis and repair.

5. Is it safe to continue driving my Honda with the B2155 trouble code present?

- Driving with this issue may lead to further electrical problems or malfunctions, so it's advisable to address the problem promptly to avoid safety hazards.

6. How much does it typically cost to repair the Driver Side MPCS Unit Lost Communication With MICU problem in a Honda?

- Repair costs can vary based on the extent of the issue, but expect to pay for diagnostic time, parts replacement, and labor charges from a repair shop.

7. Are there any preventive measures to avoid encountering the B2155 trouble code in a Honda?

- Keeping up with regular vehicle maintenance, including checking electrical components, can help prevent issues like the Driver Side MPCS Unit Lost Communication With MICU.

8. Can a weak car battery cause the OBDII code B2155 to appear in a Honda?

- A weak battery can potentially impact the communication between control units, leading to error codes like B2155. Ensuring a properly functioning battery is essential for overall vehicle health.

9. Will resetting the OBDII code B2155 in my Honda make the issue go away permanently?

- Simply clearing the code without addressing the underlying problem will not resolve the issue. It's crucial to diagnose and repair the root cause to prevent the code from reoccurring.

10. Is the Driver Side MPCS Unit Lost Communication With MICU issue a common problem in Honda vehicles?

- While it may not be extremely common, issues related to communication between control units can occur in various Honda models, requiring proper diagnosis and repair.