If you notice your semi-trailer ABS blink a code, it means more intricate issues associated with your ABS module. Unlike brake lights, ABS lights are typically controlled by a computer module. When this light flashes, it appears as a numerical code, which technicians have to diagnose manually.
Brake lights are more straightforward. These warning signals are activated by simple circuits and indicate lower-level mechanical problems such as lack of brake fluid, blown fuses, and parking brake issues.