AutoCodes – GMC – B0084 GMC

B0084 GMC Code - Right Front Impact Sensor

Quick Answer

The impact sensors are equipped on vehicles to supplement the Supplemental Inflatable Restraint (SIR) system performance. Common causes include Faulty Right Front Impact Sensor, Right Front Impact Sensor harness is open or shorted, Right Front Impact Sensor 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: B0084 GMC indicates Right Front Impact Sensor.
Common causes: Common causes include Faulty Right Front Impact Sensor, Right Front Impact Sensor harness is open or shorted, Right Front Impact Sensor 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 13,042

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 Oct 24, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0084 GMC Description

The impact sensors are equipped on vehicles to supplement the Supplemental Inflatable Restraint (SIR) system performance. The impact sensors are electronic and are not part of the deployment loops, but instead provide inputs to the inflatable restraint sensing and diagnostic module. The impact sensors can assist in determining the severity of some frontal and side collisions. The Inflatable Restraint Sensing and Diagnostic Module (SDM) uses the input from the impact sensors to assist in determining the severity of a collision, further supporting air bag deployment. If the Inflatable Restraint Sensing and Diagnostic Module determines a deployment is warranted, the Inflatable Restraint Sensing and Diagnostic Module will cause current to flow through the deployment loops deploying the air bags.

OBDII Code B0084 GMC - Right Front Impact Sensor - AutoCodes.com — B0084 GMC Code - Right Front Impact Sensor

What does this mean?

What are the Possible Causes of the DTC B0084 GMC?

Faulty Right Front Impact Sensor
Right Front Impact Sensor harness is open or shorted
Right Front Impact Sensor circuit poor electrical connection
Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0084 GMC?

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 does this mean?

Code Tech Notes

B0084:02 Right Front Impact Sensor Short to Ground
B0084:05 Right Front Impact Sensor Short to Battery or Open
B0084:08 Right Front Impact Sensor Signal Invalid
B0084:0F Right Front Impact Sensor Erratic
B0084:39 Right Front Impact Sensor Internal Electronic Failure
B0084:3A Right Front Impact Sensor Incorrect Component Installed
B0084:71 Right Front Impact Sensor Invalid Serial Data Received

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0084 GMC 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 B0084 GMC code?

Need more information on how to fix the B0084 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0084 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

B0084 2014 GMC Sierra — Right Front Impact Sensor
B0084 2015 GMC Sierra — Right Front Impact Sensor
B0084 2016 GMC Sierra — Right Front Impact Sensor
B0084 2017 GMC Sierra — Right Front Impact Sensor
B0084 2018 GMC Sierra — Right Front Impact Sensor

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 B0084 GMC Code

1. What are the common symptoms of OBDII code B0084 GMC related to the Right Front Impact Sensor?

The common symptoms include the airbag warning light illuminating on the dashboard and a diagnostic trouble code (DTC) being stored in the vehicle's computer system.

2. What are the possible causes of OBDII code B0084 GMC indicating an issue with the Right Front Impact Sensor?

Possible causes include a malfunction or failure of the right front impact sensor, wiring or connector issues, or a problem with the airbag control module.

3. How can I diagnose the Right Front Impact Sensor issue causing OBDII code B0084 GMC?

Diagnosing the problem typically involves using a scan tool to retrieve the specific DTC, checking the wiring and connectors for damage or corrosion, and testing the sensor itself for proper functionality.

4. Can I drive my vehicle with OBDII code B0084 GMC triggered by the Right Front Impact Sensor issue?

It is not recommended to drive the vehicle with this issue unresolved, as it may affect the proper functioning of the airbag system in the event of a collision.

5. What are some repair tips for resolving OBDII code B0084 GMC related to the Right Front Impact Sensor?

Repair tips may include inspecting and repairing any damaged wiring or connectors, replacing the right front impact sensor if necessary, and clearing the DTC with a scan tool after the issue has been resolved.

6. Is it possible to reset OBDII code B0084 GMC without addressing the underlying Right Front Impact Sensor problem?

Resetting the code without fixing the underlying issue will likely result in the code reappearing once the system detects the problem again.

7. How much does it typically cost to repair OBDII code B0084 GMC caused by a faulty Right Front Impact Sensor?

The cost of repair can vary depending on the extent of the issue and whether any parts need to be replaced. It is recommended to consult a professional mechanic for an accurate assessment.

8. Are there any safety risks associated with ignoring OBDII code B0084 GMC related to the Right Front Impact Sensor?

Ignoring this code can pose a safety risk, as the airbag system may not deploy correctly in a collision if the sensor is not functioning properly.

9. Can a DIY enthusiast with automotive knowledge fix OBDII code B0084 GMC involving the Right Front Impact Sensor?

While some DIY enthusiasts may be able to diagnose and repair this issue, it is recommended to seek assistance from a professional mechanic, especially when dealing with safety-critical systems like airbags.

10. How long does it take to repair OBDII code B0084 GMC associated with the Right Front Impact Sensor?

The repair time can vary depending on the specific issue and the expertise of the mechanic. It is advisable to consult with a professional to get an estimate of the repair duration.