Engine-Codes
 
OBDII Code List
 
B0020 CHEVROLET

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

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

B0020 Chevrolet Possible Causes

  • 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)
  What does this mean?

B0020 Chevrolet Tech Notes

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 does this mean?

B0020 Chevrolet 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.
OBDII Code B0020 Chevrolet - Passenger Instrument Panel Air Bag Deployment Loop Stage 2 - Engine-Codes.com

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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