Kess V2 Protocol Not Found Guide

A: Only genuine KESS V3 or KESS V2 with latest firmware (2.50+) supports CAN FD. Clones will show "Protocol Not Found" on CAN FD cars.

If you are into ECU (Engine Control Unit) tuning, chances are you own or have used KESS V2 —one of the most popular master tools for reading and writing ECU files via OBD, Boot, or Tricore mode. However, even experienced tuners occasionally face a frustrating roadblock: the dreaded "Protocol Not Found" error message. kess v2 protocol not found

❌ ✅ Truth: Many clone V2.25 units work fine up to 2018 models. Beyond that, you need a genuine tool or a boot mode read. A: Only genuine KESS V3 or KESS V2 with latest firmware (2