AutoCodes – Acura – B1255 Acura

B1255 Acura Code - Combination Switch Control Unit Lost Communication With MICU

Quick Answer

The Multiplex Integrated Control Unit (MICU) monitors the Combination Switch Control Unit. Common causes include Faulty Combination Switch Control Unit, Combination Switch Control Unit harness is open or shorted, Combination Switch Control Unit 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: B1255 Acura indicates Combination Switch Control Unit Lost Communication With MICU.
Common causes: Common causes include Faulty Combination Switch Control Unit, Combination Switch Control Unit harness is open or shorted, Combination Switch Control Unit 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.

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Code Popularity 1,403

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 Nov 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1255 Acura Description

The Multiplex Integrated Control Unit (MICU) monitors the Combination Switch Control Unit. The MICU sets the OBDII code when the Combination Switch Control Unit is not to factory specifications.

OBDII Code B1255 Acura - Combination Switch Control Unit Lost Communication With MICU - AutoCodes.com — B1255 Acura Code - Combination Switch Control Unit Lost Communication With MICU

What does this mean?

What are the Possible Causes of the DTC B1255 Acura?

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

How to Fix the DTC B1255 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 B1255 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 B1255 Acura code?

Need more information on how to fix the B1255 Acura code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1255 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 B1255 Acura Code

1. What are common symptoms of OBDII code B1255 in an Acura?

- Common symptoms include malfunctioning turn signals, non-responsive wipers, and issues with other vehicle controls operated by the combination switch.

2. What does the OBDII code B1255 in an Acura indicate?

- The code B1255 indicates a communication failure between the Combination Switch Control Unit and the Multiplex Integrated Control Unit (MICU).

3. What are possible causes of the Combination Switch Control Unit losing communication with the MICU in an Acura?

- Possible causes include wiring issues, a faulty combination switch control unit, a malfunctioning MICU, or a communication network problem within the vehicle.

4. How can I diagnose the cause of OBDII code B1255 in my Acura?

- Diagnosing the issue may require using a scan tool to communicate with the vehicle's onboard diagnostic system, checking the wiring connections, and testing the components involved in the communication network.

5. Is it safe to continue driving with the B1255 code present in my Acura?

- It is not recommended to drive with the B1255 code present, as it can lead to further electrical issues and potentially impact the vehicle's safety systems.

6. Can I repair the Combination Switch Control Unit communication issue in my Acura myself?

- Depending on your level of automotive experience, you may be able to troubleshoot and repair the issue yourself by checking connections, replacing faulty components, or seeking guidance from a professional mechanic.

7. How much does it typically cost to repair OBDII code B1255 in an Acura?

- The cost of repair can vary depending on the exact cause of the communication failure, the parts needed for replacement, and whether you choose to do the repair yourself or take it to a dealership or mechanic.

8. Will resetting the OBDII code B1255 in my Acura resolve the issue?

- Resetting the code may temporarily clear the error message, but it will not fix the underlying communication problem between the Combination Switch Control Unit and the MICU.

9. Are there any common DIY fixes for resolving the B1255 code in an Acura?

- DIY fixes may include checking and cleaning the wiring connections, ensuring proper grounding, and inspecting for any visible damage or corrosion that may be affecting the communication.

10. How can I prevent the Combination Switch Control Unit communication issue in my Acura in the future?

- Regularly inspecting the electrical components, keeping the connections clean and secure, and addressing any warning signs promptly can help prevent the recurrence of the B1255 code.