Hitachi eX200 series 2 excavator have the computer flashing 2 codes 4 + 5 help
I suspect the Hatachi has a diagnosis manual for your machine. Last week I was fighting a similar problem with my JD. With JD the codes and how to read them are not in the service and maintenance manual, but rather in a diagnostic manual. Some machines require a computer hook up to read them, others (as in mine) required a jumper be install in order to read them. Hope this helps.