Scania fault code 4644

Code 4644 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMS Engine Management System Unit injector for cylinder 2 The control unit has not detected that the fuel shut-off valve in the unit injector has closed. Read explanation → EEC Exhaust Emission Control Fuel injection for exhaust gas aftertreatment Fault in fuel valve. Read explanation →