AutoCodes – Generic – B0020:01

B0020:01 Code - Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery

Quick Answer

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 an air bag or pretensioner. Common causes include Faulty Passenger Instrument Panel Air Bag, Passenger Instrument Panel Air Bag harness is open or shorted, Passenger Instrument Panel 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: B0020:01 indicates Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery.
Common causes: Common causes include Faulty Passenger Instrument Panel Air Bag, Passenger Instrument Panel Air Bag harness is open or shorted, Passenger Instrument Panel 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.

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Code Popularity 335

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Oct 06, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B0020:01 Description

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 an air bag or pretensioner. There are 2 shorting bars that will short together control circuits when the connector is disconnected. This will help to prevent unwanted deployment of the air bag or pretensioner during servicing. The Diagnostic Trouble Code (DTC) will be set when the air bag control circuit is shorted to voltage for 2 s.

OBDII Code B0020:01 - Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery - AutoCodes.com — B0020:01 Code - Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery

What does this mean?

What are the Possible Causes of the DTC B0020:01?

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

How to Fix the DTC B0020:01?

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

B0020:01 Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Battery
B0020:02 Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Short to Ground
B0020:04 Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Open
B0020:0D Passenger Instrument Panel Air Bag Deployment Loop Stage 2 High Resistance
B0020:0E Passenger Instrument Panel Air Bag Deployment Loop Stage 2 Low Resistance

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0020:01 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 B0020:01 code?

Need more information on how to fix the B0020:01 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0020:01 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 B0020:01 Code

1. What are the common symptoms of OBDII code B0020:01?

- Common symptoms include the airbag warning light being illuminated on the dashboard and potential non-deployment of the passenger-side airbag in the event of a collision.

2. What does the OBDII code B0020:01 mean?

- OBDII code B0020:01 indicates that there is a short to battery in the passenger instrument panel airbag deployment loop at stage 2, affecting the deployment of the airbag.

3. What are the possible causes of OBDII code B0020:01?

- The possible causes include damaged wiring in the airbag system, a faulty airbag sensor, a malfunctioning airbag module, or a problem with the passenger instrument panel airbag itself.

4. How can I diagnose OBDII code B0020:01?

- Diagnosis typically involves using a scan tool to retrieve the specific code, inspecting the wiring and connections in the airbag system, and conducting tests on the airbag components to identify the source of the short to battery.

5. Can I drive my vehicle with OBDII code B0020:01?

- It is not recommended to drive the vehicle with an active airbag fault code, as it may compromise the safety of the airbag system in the event of an accident. It is advisable to have the issue diagnosed and repaired promptly.

6. How can I repair OBDII code B0020:01?

- Repairing the issue may involve repairing or replacing damaged wiring, fixing faulty sensors or modules, or replacing the passenger instrument panel airbag as necessary. It is recommended to consult a professional technician for accurate diagnosis and repair.

7. Is it safe to reset the OBDII code B0020:01 without fixing the issue?

- It is not recommended to simply reset the code without addressing the underlying problem, as this may lead to continued safety risks associated with the airbag system. It is important to diagnose and repair the issue before clearing the code.

8. How much does it cost to fix OBDII code B0020:01?

- The cost of fixing OBDII code B0020:01 can vary depending on the specific cause of the issue, the parts needed for repair, and labor costs. It is advisable to obtain estimates from qualified mechanics or repair shops.

9. Can I fix OBDII code B0020:01 myself?

- While some DIY enthusiasts may attempt to diagnose and repair OBDII code B0020:01 themselves, working on airbag systems requires specialized knowledge and tools. For safety reasons, it is recommended to seek professional assistance for this type of repair.

10. How often does OBDII code B0020:01 occur in vehicles?

- OBDII code B0020:01 is a relatively uncommon code, but it can occur in vehicles with issues related to the passenger instrument panel airbag deployment loop. Prompt diagnosis and repair are essential to ensure the proper functioning of the airbag system.