YS4

The first three characters of every VIN are the World Manufacturer Identifier (WMI). The code YS4 is assigned to Scania Bus, with the country of manufacture Sweden.

So any 17-character VIN that begins with YS4 was produced by Scania Bus:

YS4ZZZ0000000000000

The WMI only identifies the maker. To read the year, engine, plant and serial number, decode the complete 17-digit VIN with our free tool — then check which ECU it uses and what tuning services (DPF, EGR, AdBlue, DTC off, Stage) are available.