WenmarOpen by Wenmar Pro

B100A on the 2021 Audi SQ5

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name B100A
A6924092072349_22024-06-25. Service bulletin. The airbag warning light on, DTCs B100A1B, B100B1B.
A6924092072349_22024-06-25. Service bulletin. The airbag warning light on, DTCs B100A1B, B100B1B.
A6923052072349_12024-01-04. Service bulletin. This bulletin provides information when the airbag warning light is on, DTCs B100A1B, B100B1B.
AVIN4PIN202305102023-06-06. Service bulletin. Noise from front door trim panel while driving Noise from front door trim panel while driving Low coolant warning in cluster, coolant level is correct Check engine lamp is illuminated and DTC P05A000: Active Grille Air Shutter "A" Stuck is stored in the ECM. Check engine lamp is on, DTC (s) P010600, P023600, P023700, P023800 Belt noise from starter generator Leak from oil pan USB Trim detached from center console Airbag light on: DTC B100A1B or B100B1B 3.0L engine water pump leaking 3.0L engine sound generator malfunctioning
AVIN4PIN202305012023-06-06. Service bulletin. Noise from front door trim panel while driving Noise from front door trim panel while driving Low coolant warning in cluster, coolant level is correct Check engine lamp is illuminated and DTC P05A000: Active Grille Air Shutter "A" Stuck is stored in the ECM. Check engine lamp is on, DTC (s) P010600, P023600, P023700, P023800 Belt noise from starter generator Leak from oil pan Coolant resevoir cap damaged internally USB Trim detached from center console Airbag light on: DTC B100A1B or B100B1B 3.0L engine water pump leaking 3.0L engine sound generator malfunctioning

5 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.