AutoCodes – Honda – B1002 Honda

B1002 Honda Code - Multiplex Integrated Control Unit Internal Error

Quick Answer

The Multiplex Control Unit Module (MICU) monitors itself. 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 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: B1002 Honda indicates Multiplex Integrated Control Unit Internal Error.
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: 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 4,156

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 Mar 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1002 Honda Description

The Multiplex Control Unit Module (MICU) monitors itself. The MICU sets the OBDII code when there is an internal error.

OBDII Code B1002 Honda - Multiplex Integrated Control Unit Internal Error - AutoCodes.com — B1002 Honda Code - Multiplex Integrated Control Unit Internal Error

What does this mean?

What are the Possible Causes of the DTC B1002 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

How to Fix the DTC B1002 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 B1002 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 B1002 Honda code?

Need more information on how to fix the B1002 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 B1002 Honda Code

1. What are the common symptoms of OBDII code B1002 in a Honda related to the Multiplex Integrated Control Unit Internal Error?

- Common symptoms include issues with power windows, door locks, interior lights, or other electrical components.

2. What are the potential causes of OBDII code B1002 in a Honda?

- The code B1002 may be triggered by a faulty multiplex integrated control unit, wiring issues, or a software malfunction.

3. How can I diagnose the OBDII code B1002 in my Honda?

- Diagnosing the code B1002 typically involves using an OBDII scanner to retrieve the specific fault code and then inspecting the multiplex integrated control unit and related wiring for any visible damage.

4. Can I still drive my Honda with the OBDII code B1002 present?

- It is not recommended to drive your Honda with the B1002 code present, as it may lead to further electrical issues or malfunctions.

5. How can I repair the OBDII code B1002 in my Honda?

- Repairing the B1002 code may involve replacing the multiplex integrated control unit, repairing any damaged wiring, or reprogramming the unit to resolve the internal error.

6. Is it possible to reset the OBDII code B1002 in a Honda without fixing the underlying issue?

- While you can clear the code temporarily, it is essential to address the root cause to prevent the code from reoccurring and to ensure proper functioning of your vehicle's electrical system.

7. Are there any DIY tips for troubleshooting the OBDII code B1002 in a Honda?

- DIY tips may include checking for loose connections, inspecting the fuses related to the multiplex integrated control unit, and ensuring all electrical components are functioning properly.

8. How much does it cost to repair the OBDII code B1002 in a Honda at a dealership or repair shop?

- Repair costs for the B1002 code can vary depending on the extent of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a faulty battery or alternator trigger the OBDII code B1002 in a Honda?

- While a faulty battery or alternator can cause electrical issues, they are less likely to trigger the specific B1002 code related to the multiplex integrated control unit internal error.

10. Is the OBDII code B1002 common in certain Honda models or years?

- The B1002 code related to the multiplex integrated control unit internal error may be more common in specific Honda models that use this particular type of control unit, but it can occur in various models and years.