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B0021 2017 Chevrolet Silverado Code - Passenger Seat Side Air Bag Deployment Loop

Quick Answer

The B0021 diagnostic trouble code (DTC) on a 2017 Chevrolet Silverado relates to the Passenger Seat Side Air Bag Deployment Loop. Common causes include Faulty passenger seat side airbag deployment loop, Wiring harness issues, such as a short circuit or open circuit, Loose or corroded electrical connections in the airbag system. 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 2017 Chevrolet Silverado indicates Passenger Seat Side Air Bag Deployment Loop.
Common causes
Common causes include Faulty passenger seat side airbag deployment loop, Wiring harness issues, such as a short circuit or open circuit, Loose or corroded electrical connections in the airbag system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code B0021 2017 Chevrolet Silverado Description

The B0021 diagnostic trouble code (DTC) on a 2017 Chevrolet Silverado relates to the Passenger Seat Side Air Bag Deployment Loop. This code indicates a malfunction in the circuit that controls the deployment of the passenger side airbag in the event of a collision. The airbag system is a crucial safety feature in modern vehicles, designed to protect occupants in the event of a crash by rapidly inflating and providing a cushioning effect.

OBDII Code B0021 2017 Chevrolet Silverado - Passenger Seat Side Air Bag Deployment Loop
B0021 2017 Chevrolet Silverado Code - Passenger Seat Side Air Bag Deployment Loop

Common Causes of B0021 2017 Chevrolet Silverado

  1. Faulty passenger seat side airbag deployment loop.
  2. Wiring harness issues, such as a short circuit or open circuit.
  3. Loose or corroded electrical connections in the airbag system.
  4. Malfunctioning airbag control module.
  5. Impact or damage to the passenger side airbag deployment loop components.

Symptoms of B0021 2017 Chevrolet Silverado

  1. Illumination of the airbag warning light on the dashboard.
  2. Diagnostic trouble code (DTC) B0021 stored in the vehicle's computer system.
  3. Inability to turn off the passenger side airbag using the manual switch.
  4. Failure of the passenger side airbag to deploy during a crash.

How to Fix B0021 2017 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the B0021 code using a scan tool to retrieve the fault codes and pinpoint the issue.
  2. Inspect the wiring harness and electrical connections related to the passenger side airbag deployment loop for any damage, corrosion, or loose connections.
  3. Test the passenger side airbag deployment loop components, such as the sensor, inflator, and wiring, to identify any faulty parts that need replacement.
  4. Replace any damaged or malfunctioning components in the airbag system, ensuring that all connections are secure and properly routed.
  5. Clear the DTC from the vehicle's computer system and perform a test to verify that the passenger side airbag deploys correctly.

Cost to Fix B0021 2017 Chevrolet Silverado

The cost of repairing a B0021 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the parts required for this repair, such as the airbag deployment loop components or wiring harness, can range from $200 to $500. Labor costs at an auto repair shop typically range from $80 to $150 per hour, and the total repair time may vary depending on the complexity of the issue. Therefore, the total repair cost for addressing a B0021 code on a 2017 Chevrolet Silverado could range from $300 to $800 or more, including parts and labor. It is advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the specific circumstances of the vehicle.

What does this mean?

Tech Notes for B0021 2017 Chevrolet Silverado

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

Need more information about the B0021 2017 Chevrolet Silverado code?

Need more information on how to fix the B0021 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2017 Chevrolet Silverado Code

1. What does OBDII code B0021 for a 2017 Chevrolet Silverado indicate?

The B0021 code specifically relates to the passenger seat side airbag deployment loop circuit.

2. What are the common symptoms of OBDII code B0021 in a 2017 Chevrolet Silverado?

Common symptoms include the airbag warning light staying illuminated on the dashboard and potential non-deployment of the passenger side airbag during an accident.

3. What are the possible causes of OBDII code B0021 in a 2017 Chevrolet Silverado?

Potential causes of the B0021 code could include a faulty passenger seat side airbag deployment loop, damaged wiring or connectors in the airbag system, or a problem with the airbag control module.

4. How can I diagnose the issue related to OBDII code B0021 in my 2017 Chevrolet Silverado?

Diagnosing the problem may involve using a diagnostic scanner to retrieve the specific fault codes, visually inspecting the wiring and connectors related to the passenger seat side airbag, and performing circuit testing to identify any faults.

5. Can I continue to drive my 2017 Chevrolet Silverado with OBDII code B0021?

It is not recommended to drive the vehicle with unresolved airbag issues, as the passenger side airbag may not deploy in the event of an accident, potentially compromising safety.

6. What are some repair tips for fixing OBDII code B0021 in a 2017 Chevrolet Silverado?

Repair tips may include checking and repairing any damaged wiring or connectors, replacing the faulty passenger seat side airbag deployment loop, or resetting the airbag control module after the issue has been addressed.

7. Should I attempt to fix OBDII code B0021 in my 2017 Chevrolet Silverado myself?

Due to the complexity and safety implications of airbag systems, it is recommended to have the issue diagnosed and repaired by a qualified automotive technician or dealership.

8. How much does it typically cost to fix OBDII code B0021 in a 2017 Chevrolet Silverado?

The cost of repairing the B0021 code can vary depending on the specific cause of the issue, with potential costs including parts replacement, labor charges, and diagnostic fees.

9. Is OBDII code B0021 a common issue in 2017 Chevrolet Silverado vehicles?

While the B0021 code can occur in 2017 Chevrolet Silverado vehicles, its frequency may vary depending on factors such as vehicle usage and maintenance.

10. Can OBDII code B0021 in a 2017 Chevrolet Silverado be prevented?

Regular maintenance and inspections of the airbag system, including checking for any warning lights or unusual sounds, can help prevent issues like the B0021 code from occurring.

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