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B1159 Acura Code - Gauge Control Module Lost Communication With Multiplex Integrated Control Unit

Quick Answer

The B1159 diagnostic trouble code for Acura vehicles indicates that there is a communication issue between the Gauge Control Module (GCM) and the Multiplex Integrated Control Unit (MICU). Common causes include Faulty wiring or connectors, Malfunctioning Gauge Control Module, Failing Multiplex Integrated Control Unit. 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
B1159 Acura indicates Gauge Control Module Lost Communication With Multiplex Integrated Control Unit .
Common causes
Common causes include Faulty wiring or connectors, Malfunctioning Gauge Control Module, Failing Multiplex Integrated Control Unit.
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 06, 2024
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Code B1159 Acura Description

The B1159 diagnostic trouble code for Acura vehicles indicates that there is a communication issue between the Gauge Control Module (GCM) and the Multiplex Integrated Control Unit (MICU). The GCM is responsible for controlling various gauges and indicators on the dashboard, while the MICU acts as a central communication hub for different systems in the vehicle. When these two modules are unable to communicate effectively, it can lead to malfunctions in the gauge cluster and potentially affect other systems as well.

OBDII Code B1159 Acura - Gauge Control Module Lost Communication With Multiplex Integrated Control Unit
B1159 Acura Code - Gauge Control Module Lost Communication With Multiplex Integrated Control Unit

Common Causes of B1159 Acura

  1. Faulty wiring or connectors
  2. Malfunctioning Gauge Control Module
  3. Failing Multiplex Integrated Control Unit
  4. Software glitches or communication errors

Symptoms of B1159 Acura

  1. Inaccurate or erratic gauge readings
  2. Dashboard warning lights illuminated
  3. Loss of communication with other vehicle systems
  4. Poor vehicle performance or drivability issues

How to Fix B1159 Acura

  1. Diagnostic scan to confirm the B1159 code and identify the specific issue
  2. Inspect wiring and connectors for any damage or corrosion
  3. Test and potentially replace the Gauge Control Module and Multiplex Integrated Control Unit
  4. Clear the code and reset the vehicle's systems
  5. Perform a thorough test drive to ensure proper functionality of the gauge cluster and communication between modules

Cost to Fix B1159 Acura

The cost to repair a B1159 code in an Acura vehicle can vary depending on the extent of the issue and the parts that need to be replaced. On average, the repair cost for this type of communication problem can range from $200 to $500, including parts and labor. However, prices may vary based on the specific diagnosis time and labor rates at auto repair shops, as well as the location, vehicle make and model, and engine type. It's recommended to obtain multiple quotes from reputable auto repair shops to get a more accurate estimate.

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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 B1159 Acura Code

1. What are the common symptoms of OBDII code B1159 in an Acura?

- Common symptoms include malfunctioning gauges, flickering lights on the instrument cluster, and loss of communication with the vehicle's multiplex integrated control unit.

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

- Possible causes may include a faulty gauge control module, issues with the wiring or connections between the modules, or a malfunction in the multiplex integrated control unit.

3. How serious is the B1159 OBDII code in an Acura?

- While the code itself may not affect the drivability of the vehicle, it can lead to inaccurate readings on the instrument cluster, which may impact the driver's ability to monitor important vehicle functions.

4. How can I diagnose the cause of the communication loss between the Gauge Control Module and Multiplex Integrated Control Unit in my Acura?

- Diagnosing this issue typically requires a professional OBDII scanner to retrieve the specific trouble codes and pinpoint the exact source of the communication problem.

5. Can I repair the B1159 code issue in my Acura myself?

- Depending on your experience and access to tools, you may be able to address this issue yourself by checking wiring connections, replacing faulty modules, or resetting the system. However, seeking professional help is recommended for accurate diagnosis and repair.

6. Are there any temporary fixes for the Gauge Control Module communication loss issue in an Acura?

- In some cases, resetting the modules by disconnecting the battery for a few minutes may temporarily resolve the communication issue. However, this is not a permanent solution and should be followed by proper diagnosis and repair.

7. Will driving with the B1159 code illuminated cause further damage to my Acura?

- Driving with the code illuminated may not cause immediate damage to the vehicle, but it is important to address the underlying communication issue promptly to prevent potential malfunctions in the instrument cluster or other systems.

8. How much does it typically cost to repair the B1159 code in an Acura at a dealership or mechanic?

- Repair costs for this code can vary depending on the exact cause of the communication loss, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a faulty Gauge Control Module impact other systems in my Acura?

- Yes, a faulty gauge control module can potentially impact other systems that rely on its data, such as the vehicle's lighting controls, climate control, or even the engine management system.

10. Is it safe to continue driving my Acura with the instrument cluster showing erratic behavior due to the B1159 code?

- It is not recommended to drive the vehicle if the instrument cluster is showing erratic behavior, as this can lead to inaccurate readings and potentially compromise your safety on the road. Seek professional assistance to diagnose and repair the issue promptly.

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