2018–2019 Blue Bird All American, 2020–2021 Blue Bird All American School Bus, 2018–2019 Blue Bird Vision and 1 other model Recall: Electric drive train cannot detect isolation faults when the high voltage…
NHTSA campaign 21V253000 · Electrical System · filed Apr 12, 2021 · verified Jul 30, 2026
The defect
Blue Bird Body Company (Blue Bird) is recalling certain 2018-2021 Vision and All American school buses. The electric drive train cannot detect isolation faults when the high voltage contactors are closed.
The risk
An undetected high voltage isolation can expose service personnel to high voltage, increasing the risk of injury.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Blue Bird will notify owners, and dealers will update the Vehicle Control Unit software or install a different combination of High Voltage Power Distribution Unit hardware, free of charge. The recall began on May 22, 2021. Owners may contact Blue Bird customer service at 1-478-822-2242. Blue Bird's number for this recall is R21BD-SB.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
Related recalls
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Other campaigns involving Blue Bird vehicles
All Blue Bird All American recalls → · All Blue Bird recalls →
Source: NHTSA recall database, campaign 21V253000 (manufacturer number R21BD-SB). Data last verified Jul 30, 2026.