The error code B200096 in a 2016 Audi A5 typically indicates an issue related to the vehicle's airbag system, specifically pointing towards a malfunction within the passenger occupancy sensor circuit. This problem can manifest as the airbag warning light staying illuminated on the dashboard, potentially accompanied by other warning signals depending on the vehicle's diagnostic system. The frequency and severity of the issue can vary, but it generally indicates that the airbag system may not function as intended in the event of an accident, posing a significant safety risk. The performance of the vehicle itself might not be directly affected, but the safety and protection offered by the airbag system are compromised.

The root cause of this error code often lies in a faulty passenger occupancy sensor, wiring issues within the sensor circuit, or problems with the airbag control unit. The passenger occupancy sensor is designed to detect whether the passenger seat is occupied and, if so, whether the occupant is of sufficient weight to warrant airbag deployment in the event of a collision. A malfunction in this sensor or its circuit can lead to incorrect signals being sent to the airbag control unit, potentially preventing airbag deployment when necessary or causing deployment when it's not needed. Ignoring this issue could result in increased risk of injury during an accident due to airbag failure to deploy or inappropriate deployment.