AutoCodes – Acura – B1187 Acura

B1187 Acura Code - Gauge Control Module Lost Communication with the SRS Unit

Quick Answer

The Supplemental Restraint System (SRS) Airbag Unit (airbag Module) monitors the Gauge Control Module (Tachometer Module) communication. Common causes include Faulty Supplemental Restraint System (SRS) Airbag Unit, Faulty Gauge Control Module, Gauge Control Module harness is open or shorted. 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: B1187 Acura indicates Gauge Control Module Lost Communication with the SRS Unit.
Common causes: Common causes include Faulty Supplemental Restraint System (SRS) Airbag Unit, Faulty Gauge Control Module, Gauge Control Module harness is open or shorted.
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 1,987

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 06, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1187 Acura Description

The Supplemental Restraint System (SRS) Airbag Unit (airbag Module) monitors the Gauge Control Module (Tachometer Module) communication. The SRS Airbag Unit sets the OBDII code when the communication with the Gauge Control Module fails.

OBDII Code B1187 Acura - Gauge Control Module Lost Communication with the SRS Unit - AutoCodes.com — B1187 Acura Code - Gauge Control Module Lost Communication with the SRS Unit

What does this mean?

What are the Possible Causes of the DTC B1187 Acura?

Faulty Supplemental Restraint System (SRS) Airbag Unit
Faulty Gauge Control Module
Gauge Control Module harness is open or shorted
Gauge Control Module circuit poor electrical connection

How to Fix the DTC B1187 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 B1187 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 B1187 Acura code?

Need more information on how to fix the B1187 Acura code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1187 Acura code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B1187 Acura Code

1. What are the common symptoms of OBDII code B1187 in an Acura related to Gauge Control Module communication with the SRS unit?

The common symptoms include illuminated warning lights on the dashboard, loss of functionality in the gauge cluster, and potential issues with the airbag system.

2. What are the possible causes of OBDII code B1187 in an Acura?

The code B1187 typically indicates a communication problem between the Gauge Control Module and the SRS unit, which can be caused by wiring issues, a faulty module, or a malfunction in the SRS unit itself.

3. How can I diagnose the cause of OBDII code B1187 in my Acura?

Diagnosing this code usually involves checking the wiring connections between the Gauge Control Module and the SRS unit, testing the components for proper functionality, and using a diagnostic scanner to retrieve specific fault codes.

4. Can I still drive my Acura safely with OBDII code B1187 present?

It is not recommended to drive the vehicle with this code present, as it may indicate potential safety issues related to the airbag system. It's best to address the problem promptly to ensure the proper functioning of essential safety systems.

5. How can I repair OBDII code B1187 in my Acura?

Repairing this code may involve fixing any wiring issues, replacing the Gauge Control Module or the SRS unit if necessary, and clearing the codes with a diagnostic scanner after the repairs are completed.

6. Is it possible to reset OBDII code B1187 in an Acura without fixing the underlying issue?

While you can clear the code temporarily with a diagnostic scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring and ensure the proper functioning of the safety systems.

7. Are there any DIY tips for troubleshooting OBDII code B1187 in an Acura?

DIY troubleshooting tips may include visually inspecting the wiring connections, checking for corrosion or damage, and ensuring all connections are secure before considering more advanced diagnostic steps or component replacement.

8. How much does it typically cost to repair OBDII code B1187 in an Acura?

The cost of repairing this code can vary depending on the specific issue causing the communication error between the Gauge Control Module and the SRS unit. Costs may include labor charges, parts replacement, and diagnostic fees.

9. Can OBDII code B1187 in an Acura be a recurring issue even after repairs?

If the underlying cause of the communication error is not properly addressed during repairs, OBDII code B1187 may reappear. Ensuring thorough diagnosis and repair of the root cause can help prevent the issue from recurring.

10. Is it recommended to seek professional help for diagnosing and repairing OBDII code B1187 in an Acura?

Due to the complexity of the airbag system and the importance of safety, it is advisable to consult a qualified mechanic or technician with experience in diagnosing and repairing issues related to OBDII codes, especially those concerning the SRS unit and Gauge Control Module communication.