B229B Code: Meaning, Causes, and Symptoms | OBD2 Codes

B229B – Occupant Classification System Obstruction


B229B Possible Symptoms


Air Bag Warning Light ON


B229B Possible Causes


A foreign object placed under or contacting the passenger seat,Faulty Occupant Classification Sensor (OCS) System Component


B229B Description


The Occupant Classification Sensor (OCS) system is used to classify the front passenger seat occupant in the event of a deployable impact. The Occupant Classification Sensor Module (OCSM) monitors the weight sensors and circuitry for faults. If the OCSM detects an obstruction on one or all OCS weight sensors, it will store DTC B229B in memory and send a message to the restraints control module (RCM) which sends a message to the Instrument Cluster (IC) module to illuminates the air bag indicator.