I kindly ask for help regarding the following problem:
as soon as I start the engine, the system detects an "Abnormal update rate" error SPN639 FMI 9 and a warning SPN1235, FMI9. I want to clarify that after a while that the engine works, the RPM + and RPM- command does not work anymore until I switch it off and on again. All engine data are correctly displayed and managed. Can you help me please?
Customer support service by UserEcho