AutoCodes – Acura – B1059 Acura

B1059 Acura 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 Acura 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 2,191

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

What does this mean?

What are the Possible Causes of the DTC B1059 Acura?

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 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 B1059 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 B1059 Acura 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 B1059 Acura Code

1. What are the common symptoms of OBDII code B1059 in an Acura related to the Relay Control Module?

- Common symptoms include issues with power door locks, windows, and other electronic components controlled by the door multiplex control unit.

2. What could cause the Relay Control Module to lose communication with the Door Multiplex Control Unit in an Acura?

- Causes may include wiring issues, a faulty relay control module, a malfunctioning door multiplex control unit, or a communication network problem.

3. How can I diagnose the cause of OBDII code B1059 in my Acura?

- Proper diagnosis involves checking the wiring connections, inspecting the relay control module and door multiplex control unit, and using a diagnostic scanner to identify communication faults.

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

- It is generally not recommended to drive with this code as it can affect the functionality of critical vehicle systems controlled by the door multiplex control unit.

5. What are some repair tips for fixing the communication issue between the Relay Control Module and Door Multiplex Control Unit?

- Repair tips may include checking and repairing any damaged wiring, replacing faulty components, ensuring proper connections, and resetting the error code after repairs.

6. Can a DIY enthusiast fix the B1059 code issue in an Acura?

- While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing communication issues between modules may require advanced tools and expertise best left to professionals.

7. How much does it typically cost to repair OBDII code B1059 in an Acura at a dealership or repair shop?

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

8. Will resetting the OBDII code B1059 in my Acura make the problem go away permanently?

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

9. Are there any preventive measures to avoid OBDII code B1059 from occurring in my Acura?

- Regular maintenance checks, addressing electrical issues promptly, and ensuring proper installation of aftermarket electronic components can help prevent communication errors between modules.

10. Can a faulty battery or alternator cause OBDII code B1059 to trigger in an Acura?

- While a faulty battery or alternator can potentially lead to electrical issues in a vehicle, they are less likely to directly cause the specific communication fault indicated by OBDII code B1059.