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B1160 Acura Code - Gauge Control Module Lost Communication With Door Multiplex Control Unit

Quick Answer

The B1160 diagnostic trouble code for Acura vehicles indicates that there is a communication error between the Gauge Control Module (GCM) and the Door Multiplex Control Unit (DMCU). Common causes include Faulty Gauge Control Module, Faulty Door Multiplex Control Unit, Wiring or connection issues between the GCM and DMCU. 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
B1160 Acura indicates Gauge Control Module Lost Communication With Door Multiplex Control Unit .
Common causes
Common causes include Faulty Gauge Control Module, Faulty Door Multiplex Control Unit, Wiring or connection issues between the GCM and DMCU.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B1160 Acura Description

The B1160 diagnostic trouble code for Acura vehicles indicates that there is a communication error between the Gauge Control Module (GCM) and the Door Multiplex Control Unit (DMCU). The GCM is responsible for controlling various gauges and indicators on the vehicle's instrument cluster, while the DMCU manages the communication between the vehicle's doors and other control modules. When these two modules are unable to communicate effectively, it can lead to a range of issues affecting the vehicle's performance and functionality.

OBDII Code B1160 Acura - Gauge Control Module Lost Communication With Door Multiplex Control Unit
B1160 Acura Code - Gauge Control Module Lost Communication With Door Multiplex Control Unit

Common Causes of B1160 Acura

  1. Faulty Gauge Control Module
  2. Faulty Door Multiplex Control Unit
  3. Wiring or connection issues between the GCM and DMCU
  4. Corrosion or damage to electrical connectors
  5. Software or programming errors in the control modules

Symptoms of B1160 Acura

  1. Malfunctioning gauges on the instrument cluster
  2. Issues with door locks, windows, or interior lights
  3. Dashboard warning lights illuminated
  4. Vehicle may not start or operate properly

How to Fix B1160 Acura

  1. Begin by conducting a thorough diagnostic scan to confirm the B1160 code and identify any other related issues.
  2. Inspect the wiring harness and connectors between the Gauge Control Module and Door Multiplex Control Unit for any damage or corrosion.
  3. Test the GCM and DMCU for proper functionality and communication.
  4. Replace any faulty modules or components, such as the GCM or DMCU, if necessary.
  5. Clear the diagnostic trouble codes, reset the system, and perform a final test to ensure the issue has been resolved.

Cost to Fix B1160 Acura

The typical repair costs for addressing the B1160 code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing a faulty Gauge Control Module or Door Multiplex Control Unit can range from $200 to $600, including parts and labor. However, additional costs may apply if there are wiring issues or other components that need to be replaced. It is advisable to consult with a professional mechanic or dealership to obtain an accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates and diagnostic fees can vary, so it's recommended to inquire about these costs upfront.

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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 B1160 Acura Code

1. What are the common symptoms of OBDII code B1160 in an Acura?

- Common symptoms include malfunctioning gauges on the instrument cluster, interior lights not working properly, power windows and locks not functioning correctly, and warning lights on the dashboard.

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

- Possible causes include damaged wiring or connectors between the modules, a faulty gauge control module, a malfunctioning door multiplex control unit, or a communication network issue.

3. How can I diagnose the issue related to code B1160 in my Acura?

- Diagnosing the problem involves using a diagnostic scan tool to retrieve the specific trouble code, checking the wiring and connectors for any visible damage, and testing the communication between the affected modules.

4. Is it safe to continue driving my Acura with OBDII code B1160 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further electrical issues and potential safety hazards due to the loss of communication between critical modules.

5. What are some repair tips for resolving OBDII code B1160 in an Acura?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the faulty gauge control module or door multiplex control unit if necessary, and ensuring proper communication network functionality.

6. Can I reset the OBDII code B1160 in my Acura by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it will not fix the underlying issue causing the communication problem between the Gauge Control Module and Door Multiplex Control Unit.

7. How much does it typically cost to repair OBDII code B1160 in an Acura?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services. It is advisable to consult a professional mechanic for an accurate estimate.

8. Are there any preventive measures to avoid encountering OBDII code B1160 in the future?

- Regular maintenance checks, inspecting wiring harnesses for wear or damage, and addressing any electrical issues promptly can help prevent the recurrence of communication problems between modules in your Acura.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code B1160 in an Acura?

- While some individuals may be able to address simple wiring or connector issues, diagnosing and repairing communication problems between modules often require specialized tools and expertise best handled by a professional mechanic.

10. How long does it typically take to repair OBDII code B1160 in an Acura?

- The repair time can vary depending on the complexity of the issue and the availability of parts. In some cases, resolving this code may take a few hours to a full day, depending on the extent of the repair needed.

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