Self-diagnosis Fault code output MAN M(S)5 EDC 25 Overview of flashcodes Number of flashes Long Short Description Steady light fault See Page 0 0 No fault stored 1 Pedal value transmitter (hand throttle signal) yes 33 3 Boost air temperature sensing no 34 4 Engine speed sensing (rpm sensor, DZG, 1) yes 35 5 Boost pressure sensing yes 36 6 Control rod position sensing yes 37 7 Coolant temperature sensing yes 38 10 Fuel-delivery regulator monitoring yes 39 14 Engine speed sensing (auxiliary rpm sensor, HZG, 2) yes 40 1 1 Fuel temperature reader no 41 1 3 Undervoltage no 42 1 4 Request button (brake) no 43 1 6 Control unit (Computer coupling) yes 44 1 7 Overrevving yes 45 1 12 Multistage switch for engine speed yes 46 1 13 EDC operating element for idle speed setting no 47 2 5 Main relay sticking no 48 2 8 Atmospheric pressure sensing yes 49 3 1 Redundant cutout device (EHAB) yes 50 3 2 Control unit EEPROM computer, 1 fault yes 51 3 3 Control unit EEPROM computer, 2 faults yes 52 3 4 Externer Stop-Schalter no 53 3 8 Afterrunning not completed yes 54 3 9 Control unit, after-running watchdog fault yes 55 3 10 Control rod travel transmitter – loose contact no 56