Scania fault code 4168

Code 4168 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMS Engine Management System Emissions of nitrogen oxides (NOx) The measured level of nitrogen oxides (NOx) is higher than it should be. The emissions are high (above 5 g NOx/kW). Torque reduction is not activated. The vehicle is at risk of exc… Read explanation → EMU Refrigerant compressor E158, supply voltage, short circuit to battery The control unit indicates too high a voltage. Read explanation →