B1B13 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1B13 – Driver Knee Bolster Squib Circuit Shorted Together

 

B1B13 Possible Symptoms

 

Air Bag Warning Light ON

 

B1B13 Possible Causes

 

Faulty Driver Knee Bolster Squib,Driver Knee Bolster Squib harness is open or shorted,Driver Knee Bolster Squib circuit poor electrical connection,Faulty Driver Knee Bolster Airbag,Faulty Occupant Restraint Controller (ORC)

 

B1B13 Description

 

When powered, the Occupant Restraint Controller (ORC) sends a test current to the squibs to verify the integrity of the squib and wiring. These circuits are maintained in a floating configuration at the module (connected to neither power nor ground) as protection against inadvertent deployment. The use of the Supplemental Restraint System (SRS) Load Tool Adaptor provides a test point as well as a method for opening the shorting bar connections within the harness connector. The ORC Module sends out a 40 mA diagnostic current on each squib voltage supply circuit at power up, and every 500 ms thereafter while the ignition is on.