AutoCodes – Acura – B1157 Acura

B1157 Acura Code - Gauge Control Module Lost Communication With Multiplex Integrated Control Unit

Quick Answer

The Multiplex Integrated Control Unit (MICU) monitors the Gauge Control Module. Common causes include Faulty Gauge Control Module, Gauge Control Module harness is open or shorted, Gauge Control Module 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: B1157 Acura indicates Gauge Control Module Lost Communication With Multiplex Integrated Control Unit .
Common causes: Common causes include Faulty Gauge Control Module, Gauge Control Module harness is open or shorted, Gauge Control Module 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 1,916

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1157 Acura Description

The Multiplex Integrated Control Unit (MICU) monitors the Gauge Control Module. The MICU sets the OBDII code when the Gauge Control Module is not to factory specifications.

OBDII Code B1157 Acura - Gauge Control Module Lost Communication With Multiplex Integrated Control Unit - AutoCodes.com — B1157 Acura Code - Gauge Control Module Lost Communication With Multiplex Integrated Control Unit

What does this mean?

What are the Possible Causes of the DTC B1157 Acura?

Faulty Gauge Control Module
Gauge Control Module harness is open or shorted
Gauge Control Module circuit poor electrical connection
Faulty Multiplex Integrated Control Unit (MICU)

How to Fix the DTC B1157 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 B1157 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 B1157 Acura code?

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Need Help with the Code?

Get the B1157 Acura 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 B1157 Acura Code

1. What are the common symptoms of OBDII code B1157 in an Acura?

- Common symptoms include loss of communication with the multiplex integrated control unit, malfunctioning gauge control module, and dashboard instrument cluster issues.

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

- The most common causes are wiring issues, a faulty gauge control module, a malfunctioning multiplex integrated control unit, or a communication network problem within the vehicle.

3. How can I diagnose the cause of OBDII code B1157 in my Acura?

- Diagnosis typically involves checking the wiring connections between the gauge control module and the multiplex integrated control unit, testing the modules for proper functionality, and scanning the vehicle's network for communication errors.

4. Can a DIY enthusiast repair OBDII code B1157 in an Acura?

- Depending on the root cause, some DIY repairs may be possible, such as checking and repairing wiring connections. However, diagnosing and repairing electronic module issues may require professional assistance.

5. Is it safe to drive my Acura with OBDII code B1157 present?

- It is not recommended to drive your Acura with this code present, as it may lead to inaccurate gauge readings or other electrical issues that could affect the vehicle's performance and safety.

6. How much does it cost to repair OBDII code B1157 in an Acura?

- The cost of repair can vary depending on the exact cause of the issue. It may range from a simple wiring repair cost to the replacement of electronic modules, which could be more expensive.

7. Can resetting the OBDII code B1157 clear the issue temporarily?

- Resetting the code may temporarily clear the issue, but it is likely to return if the root cause of the communication problem between the gauge control module and the multiplex integrated control unit is not resolved.

8. Can a software update fix OBDII code B1157 in an Acura?

- In some cases, a software update may address communication issues between modules, so it's worth checking with your dealership or a qualified technician to see if an update is available for your specific model.

9. Are there any preventive maintenance tips to avoid OBDII code B1157 in the future?

- Regularly checking and maintaining the electrical connections in your vehicle, as well as following the manufacturer's recommended service intervals, can help prevent communication issues that lead to OBDII code B1157.

10. How long does it take to repair OBDII code B1157 in an Acura?

- The repair time can vary depending on the diagnostic process and the complexity of the issue. It may range from a few hours to a day or more, especially if electronic modules need to be replaced or reprogrammed.