DTC B1211-00: Front Center Left Sensor Fault: General Description
WARNING: This page is about a different car, the 2019 Kia Stinger. However, it is still accessible from the selected car via links, so may be relevant.
The Parking Assist System (PAS) is an electronic driving aid that warns driver of surrounding obstacles when they are parking. PAS consists of 8 (Front: 4, Rear: 4) sensors which uses ultrasonic waves to detect obstacles and sends signal via LIN communication to BCM. The BCM receives signals from PAS sensors and operate buzzer and/or transmits data to instrument cluster for display.