Vehicle circuit fault display system

The invention relates to the technical field of automobile maintenance, in particular to a vehicle circuit fault display system. Comprising a fault diagnosis device body, a bracelet, a supporting table and a limiting assembly, the supporting table is fixedly connected with the bracelet, the supporting table is arranged above the bracelet, the limiting assembly comprises a U-shaped frame, a clamping plate, an abutting spring, a sliding rod, a first extrusion arc block and a second extrusion arc block, the U-shaped frame is arranged above the supporting table, the clamping plate is arranged in the U-shaped frame, and the abutting spring is arranged on the clamping plate. The two ends of the abutting spring are fixedly connected with the clamping plate and the U-shaped frame respectively, the sliding rod is fixedly connected with the clamping plate, penetrates through the U-shaped frame and is slidably connected with the U-shaped frame, the first extrusion arc block is fixedly connected with the U-shaped frame a