AutoCodes – Chevrolet – B0021 2014 Chevrolet Silverado

B0021 2014 Chevrolet Silverado Code - Passenger Seat Side Air Bag Deployment Loop

Quick Answer

A Diagnostic Trouble Code (DTC) will be stored in non-volatile memory if a malfunction is detected. Common causes include Faulty Passenger Seat Side Air Bag, Passenger Seat Side Air Bag harness is open or shorted, Passenger Seat Side Air Bag 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: B0021 2014 Chevrolet Silverado indicates Passenger Seat Side Air Bag Deployment Loop.
Common causes: Common causes include Faulty Passenger Seat Side Air Bag, Passenger Seat Side Air Bag harness is open or shorted, Passenger Seat Side Air Bag 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 574

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 09, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B0021 2014 Chevrolet Silverado Description

A Diagnostic Trouble Code (DTC) will be stored in non-volatile memory if a malfunction is detected. During a side or frontal crash of sufficient force, the inflatable restraint Sensing and Diagnostic Module (SDM) will allow current to flow through the deployment loop in order to deploy the passenger seat side air bag. The SDM performs continuous diagnostic tests on the deployment loops to check for proper circuit continuity and for shorts to ground or voltage. A shorting bar is used within the passenger seat side air bag connector which will short together both high and low circuits when the connector is disconnected. This will help to prevent unwanted deployment of the air bag during servicing.

OBDII Code B0021 2014 Chevrolet Silverado - Passenger Seat Side Air Bag Deployment Loop - AutoCodes.com — B0021 2014 Chevrolet Silverado Code - Passenger Seat Side Air Bag Deployment Loop

What does this mean?

What are the Possible Causes of the DTC B0021 2014 Chevrolet Silverado?

Faulty Passenger Seat Side Air Bag
Passenger Seat Side Air Bag harness is open or shorted
Passenger Seat Side Air Bag circuit poor electrical connection
Faulty Sensing and Diagnostic Module (SDM)

How to Fix the DTC B0021 2014 Chevrolet Silverado?

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

B0021:01 Passenger Seat Side Air Bag Deployment Loop Short to Battery
B0021:02 Passenger Seat Side Air Bag Deployment Loop Short to Ground
B0021:04 Passenger Seat Side Air Bag Deployment Loop Open
B0021:0D Passenger Seat Side Air Bag Deployment Loop High Resistance
B0021:0E Passenger Seat Side Air Bag Deployment Loop Low Resistance

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0021 2014 Chevrolet Silverado 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 B0021 2014 Chevrolet Silverado code?

Need more information on how to fix the B0021 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0021 2014 Chevrolet Silverado 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 B0021 2014 Chevrolet Silverado Code

1. What does the OBDII code B0021 for a 2014 Chevrolet Silverado indicate?

The code B0021 in a 2014 Chevrolet Silverado specifically relates to the Passenger Seat Side Air Bag Deployment Loop.

2. What are common symptoms associated with OBDII code B0021 in a 2014 Chevrolet Silverado?

Common symptoms may include the airbag warning light illuminating on the dashboard and potential issues with the passenger seat side airbag system.

3. What are possible causes of OBDII code B0021 in a 2014 Chevrolet Silverado?

Common causes of the B0021 code can include faulty wiring, a damaged airbag deployment loop, or issues with the airbag control module.

4. How can I diagnose the OBDII code B0021 in my 2014 Chevrolet Silverado?

Diagnosing the B0021 code typically involves using an OBDII scanner to retrieve the specific fault code and then inspecting the passenger seat side airbag system components for any visible damage or issues.

5. Can I drive my 2014 Chevrolet Silverado with the OBDII code B0021?

It is not recommended to drive the vehicle with an active airbag fault code like B0021, as it may compromise the safety of the airbag system in the event of a collision.

6. How can I repair the OBDII code B0021 in a 2014 Chevrolet Silverado?

Repairing the B0021 code may involve repairing or replacing damaged wiring, fixing the airbag deployment loop, or replacing the airbag control module as needed.

7. Is it safe to reset the OBDII code B0021 in a 2014 Chevrolet Silverado without fixing the underlying issue?

Resetting the code without addressing the root cause can temporarily turn off the warning light, but the underlying safety issue with the airbag system will remain unresolved.

8. Can a DIY enthusiast fix the OBDII code B0021 in a 2014 Chevrolet Silverado?

While some basic troubleshooting and repairs can be done by a DIY enthusiast, working on the airbag system requires specialized knowledge and tools best left to professionals.

9. How much does it cost to repair the OBDII code B0021 in a 2014 Chevrolet Silverado?

The cost of repairing the B0021 code can vary depending on the extent of the damage and the specific components that need to be repaired or replaced. It is recommended to consult a mechanic for an accurate estimate.

10. How often should I have the airbag system inspected in my 2014 Chevrolet Silverado to prevent OBDII code B0021 from occurring?

Regular maintenance checks, especially after any incidents that may have impacted the airbag system, can help prevent issues like the B0021 code from occurring. It is advisable to follow the manufacturer's recommended service schedule for optimal safety.