Scania fault code 550

Code 550 is used by 11 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMS Engine Management System Post injection ontime too long, cylinder 6. The error is detected when the post injection ontime, for either post1 or post2, has been consequtively too long for a period of time. Read explanation → VDT Output signal Invalid configuration. Read explanation → COO Coordinator Manual activation of retarder lever The voltage in the circuit for the retarder lever or for the auxiliary brake lever has assumed an inadmissible value. The voltage value does not correspond to a permitted switch po… Read explanation → ELC Electronically controlled air suspension Voltage supply for solenoid valve. The voltage on the output to the solenoid valve has been too low. Read explanation → CUV Visibility system Parking light Current consumption on the control unit output has exceeded 0.5 A for one second. Read explanation → BCI Configuration fault, Expansion unit I The expansion unit is responding, but does not exist according to the vehicle configuration. Read explanation → LAS Locking and Alarm System Motion sensor in the cab The motion sensor sensitivity level is faulty. Read explanation → ICL Instrument Cluster External instrument lighting Instrument cluster has no grounding. Read explanation → ALM Micro switch lower storage area passenger side (truck)/micro switch A9 (bus), open circuit Open circuit in the micro switch. Read explanation → EST Motor pump unit The fault code is activated when the motor pump unit has overheated or cannot turn. Read explanation → ESTA Motor pump unit The fault code is activated when the motor pump unit has overheated or cannot turn. Read explanation →