Scania fault code 5123

Code 5123 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMS Engine Management System Calibration of the mass flow sensor Calibration of the mass flow sensor has reached the highest possible calibrated value at one operating point. Read explanation → EMD Exhaust brake actuator M4000 – CAN communication The CAN communication between the engine management system and the exhaust brake actuator is not working. The CAN message from the exhaust brake actuator timed out. Read explanation → EME Exhaust brake actuator M4000 – CAN communication The CAN communication between the engine management system and the exhaust brake actuator is not working. The CAN message from the exhaust brake actuator timed out. Read explanation → EMO Exhaust brake actuator M4000 – CAN communication The CAN communication between the engine management system and the exhaust brake actuator is not working. The CAN message from the exhaust brake actuator timed out. Read explanation →