Scania fault code 4181

Code 4181 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMS Engine Management System SCR – Tank temperature The temperature of the reductant in the tank is below -8°C and it is necessary to thaw the reductant. The SCR system is not equipped with a heating system which can thaw the reduct… Read explanation → EMU Refrigerant compressor E158, internal fault The refrigeration compressor reports unbalanced currents. The fault code may expire by itself, the refrigeration compressor updates the status every 30 seconds. Read explanation →