If you are trying to play a legitimate video with this name but it won't open, consider these steps:
If the file was sent to you by an unknown source or found on a suspicious website: b0022.mp4
The .mp4 container can hold many different video types. If your player can't read it, you may need to install a codec pack or use VLC. If you are trying to play a legitimate
In the automotive world, the alphanumeric string is a well-known Diagnostic Trouble Code (DTC) . b0022.mp4