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Engine-Codes - Chevrolet - B0020 CHEVROLET

B0020 CHEVROLET - Passenger Instrument Panel Air Bag Deployment Loop Stage 2

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B0020 CHEVROLET Possible Causes

What does this mean?
  • Faulty Passenger Frontal Module
  • Passenger Frontal Module harness is open or shorted
  • Passenger Frontal Module circuit poor electrical connection
  • Faulty Sensing and Diagnostic Module (SDM)

How is the B0020 CHEVROLET code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

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

What is the cost to diagnose the B0020 CHEVROLET code

Labor: 1.0

The cost to diagnose the B0020 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Air Bag Warning Light ON

B0020 CHEVROLET Meaning

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 which 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.

More Information

Need more information on how to fix the B0020 CHEVROLET 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.

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