Reply To: Where are the IAP sensors? – 2016 GT250R
I assume those codes are flashing sequences of the red Fi light, = They all point to the oxygen sensors (exhaust lambda sensors ) (high Voltage & low voltage errors) , so they may be going haywire tripping up the ECU. You will need to replace them and make sure the ECU plugs and ECU pins are very clean too (no liquids , just compressed air only)
Get YUASA YTX 14BS or VARTA 14BS (german brand) = That’s all I use and ever recommend for EFi machines , i can’t comment on other cheap brands as i don’t like them and they have always let me down eventually. Though any battery will crank a carb motor as it has far less electronics to power up , go figure!