Air Pressure Gauge Malfunction/FMVSS 121

Blue Bird Body Company (Blue Bird) is recalling certain 2021-2024 All American and 2021-2022 Vision school buses. A software error in the instrument cluster may cause the air pressure gauges and the visual and audio low air warnings to not function. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."