Scania fault code 4169

EMS Engine Management System Emissions of nitrogen oxides (NOx) The measured level of nitrogen oxides downstream of the catalytic converter is higher than expected. Read explanation → EMU Refrigerant compressor E157, no refrigerant The refrigerant compressor indicates too low a pressure on the discharge side. Read explanation → EMD SCR system The measured nitrogen oxide content after the catalytic converter is higher than it should be. Read explanation → EME SCR system The measured nitrogen oxide content after the catalytic converter is higher than it should be. Read explanation → EMO SCR system The measured nitrogen oxide (NOx) content after the catalytic converter is higher than it should be. Read explanation →