Reply To: reading trouble codes for GV250 EFI bikes Forums 🚥 PiT STOP 🔧 Hyosung Technical Help reading trouble codes for GV250 EFI bikes Reply To: reading trouble codes for GV250 EFI bikes May 23, 2020 at 7:09 PM #4446 Hyosilver!Member Topics: 3Replies: 3 To end this thread I thought I’d add this manual. It tells how to read trouble codes on analogue instruments like my 2016 EFI GV250, Found the mystery code on mine as well. 0505. Idle speed control . (Edit)
