AutoCodes – Honda – B1059 Honda

B1059 Honda Code - Relay Control Module Lost Communication With Door Multiplex Control Unit

Quick Answer

The Relay Control Module monitors the Door Multiplex Control Unit. Common causes include Faulty Door Multiplex Control Unit, Door Multiplex Control Unit harness is open or shorted, Door Multiplex Control Unit 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: B1059 Honda indicates Relay Control Module Lost Communication With Door Multiplex Control Unit.
Common causes: Common causes include Faulty Door Multiplex Control Unit, Door Multiplex Control Unit harness is open or shorted, Door Multiplex Control Unit 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 3,717

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 B1059 Honda Description

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

OBDII Code B1059 Honda - Relay Control Module Lost Communication With Door Multiplex Control Unit - AutoCodes.com — B1059 Honda Code - Relay Control Module Lost Communication With Door Multiplex Control Unit

What does this mean?

What are the Possible Causes of the DTC B1059 Honda?

Faulty Door Multiplex Control Unit
Door Multiplex Control Unit harness is open or shorted
Door Multiplex Control Unit circuit poor electrical connection
Faulty Relay Control Module

How to Fix the DTC B1059 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 B1059 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 B1059 Honda code?

Need more information on how to fix the B1059 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1059 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 B1059 Honda Code

1. What are the common symptoms of OBDII code B1059 in a Honda?

- Common symptoms include malfunctioning power door locks, inoperative power windows, and issues with interior lights not working properly.

2. What could cause the OBDII code B1059 in a Honda to appear?

- The code may appear due to a poor connection between the relay control module and the door multiplex control unit, a faulty relay control module, or a defective door multiplex control unit.

3. How can I diagnose the issue related to code B1059 in my Honda?

- Diagnosing the issue involves checking the wiring connections between the relay control module and door multiplex control unit, testing the components for proper functionality, and using a diagnostic scanner to retrieve and clear the code.

4. Is it safe to continue driving my Honda with the B1059 code present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to avoid potential inconvenience or safety hazards related to malfunctioning door controls.

5. Can I repair the OBDII code B1059 in my Honda myself?

- If you have experience with automotive electrical systems and access to the necessary tools, you may be able to address the issue yourself by checking and repairing the wiring connections or replacing the faulty components.

6. Are there any specific repair tips for resolving the B1059 code in a Honda?

- When repairing the issue, make sure to carefully inspect the wiring harness for any damage, secure all connections properly, and consider replacing the relay control module or door multiplex control unit if needed.

7. Will resetting the OBDII code B1059 in my Honda make it go away permanently?

- Resetting the code may temporarily clear it, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is important to diagnose and repair the root cause of the problem.

8. How much does it typically cost to fix the OBDII code B1059 in a Honda at a repair shop?

- The cost of fixing this code can vary depending on the specific cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to obtain a few quotes for comparison.

9. Is the OBDII code B1059 specific to Honda vehicles only?

- While the code description may be specific to Honda vehicles, similar issues related to communication loss between modules can occur in other vehicle makes and models, albeit with different diagnostic codes.

10. Can the OBDII code B1059 in a Honda be triggered by a weak battery or alternator?

- A weak battery or alternator can potentially cause electrical issues leading to the B1059 code, so it is advisable to ensure that the battery and charging system are in good condition when diagnosing this problem.