B1C28 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1C28 – Left Side Seat Thorax Squib 1 High


B1C28 Possible Symptoms


Air Bag Warning Light ON


B1C28 Possible Causes


Faulty Left Thorax Side Air Bag,Left Thorax Side Air Bag harness is open or shorted,Left Thorax Side Air Bag circuit poor electrical connection,Faulty Occupant Restraint Controller (ORC)


B1C28 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 provides a test point as well as a method for opening the shorting bar connections within the harness connector. The ORC 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.