AutoCodes – Generic – B0051

B0051 Code - Deployment Commanded

Quick Answer

The Inflatable Restraint Sensing and Diagnostic Module (SDM) contains sensing devices that converts vehicle velocity changes to electrical signals. Common causes include Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM), Inflatable Restraint Sensing and Diagnostic Module (SDM) harness is open or shorted, Inflatable Restraint Sensing and Diagnostic Module (SDM) 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: B0051 indicates Deployment Commanded.
Common causes: Common causes include Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM), Inflatable Restraint Sensing and Diagnostic Module (SDM) harness is open or shorted, Inflatable Restraint Sensing and Diagnostic Module (SDM) 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 5,662

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 Mar 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0051 Description

The Inflatable Restraint Sensing and Diagnostic Module (SDM) contains sensing devices that converts vehicle velocity changes to electrical signals. The SDM processes the generated electrical signals and compares them to values stored in memory. When the generated signals exceed the stored values, the SDM performs additional signal processing and compares the generated signals to signals stored in memory. When 2 of the generated signals exceed the stored values, the SDM will cause current to flow through the inflator modules, deploying the inflator modules, and causing DTC B0051 to set.

OBDII Code B0051 - Deployment Commanded - AutoCodes.com — B0051 Code - Deployment Commanded

What does this mean?

What are the Possible Causes of the DTC B0051?

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

How to Fix the DTC B0051?

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 B0051 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 B0051 code?

Need more information on how to fix the B0051 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0051 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B0051 Buick — Deployment Commanded
B0051 Cadillac — Deployment Commanded
B0051 Chevrolet — Deployment Commanded
B0051 GMC — Deployment Commanded

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 B0051 Code

1. What does OBDII code B0051 Deployment Commanded mean?

When the B0051 code is triggered, it indicates an issue with the deployment command signal from the airbag control module.

2. What are the common symptoms of OBDII code B0051?

Common symptoms of code B0051 include the airbag warning light illuminating on the dashboard and potential issues with the airbag system's deployment.

3. What are the possible causes of OBDII code B0051?

The B0051 code can be caused by a faulty airbag control module, damaged wiring or connectors in the airbag system, or a problem with the airbag deployment circuit.

4. How can I diagnose OBDII code B0051?

Diagnosing code B0051 involves using a diagnostic scanner to retrieve the specific fault codes, inspecting the airbag control module and related components, and testing the deployment circuit for continuity and proper functioning.

5. Can I drive my vehicle with OBDII code B0051?

It is not recommended to drive your vehicle with an active B0051 code, as it indicates a potential issue with the airbag system's deployment, which is crucial for occupant safety in the event of a collision.

6. How can I repair OBDII code B0051?

Repairing code B0051 typically involves addressing the specific cause of the issue, such as replacing a faulty airbag control module, repairing damaged wiring, or fixing a malfunctioning deployment circuit.

7. Is it safe to reset OBDII code B0051 and clear the error code?

While you can clear the error code temporarily, it is essential to diagnose and repair the underlying issue causing code B0051 to ensure the proper functioning of the airbag system and overall safety of the vehicle.

8. How much does it cost to fix OBDII code B0051?

The cost of repairing code B0051 can vary depending on the specific cause of the issue, the extent of the repair needed, and labor rates. It is recommended to consult a professional mechanic for an accurate estimate.

9. Can OBDII code B0051 be triggered by a loose connection in the airbag system?

Yes, a loose or poor connection in the airbag system, such as in the wiring or connectors, can trigger code B0051 Deployment Commanded.

10. Will OBDII code B0051 affect the overall performance of my vehicle?

Code B0051 specifically relates to the airbag system's deployment and safety features, so it should not directly impact the overall performance of your vehicle but can compromise occupant safety in the event of a collision.