Scania fault code 4657

Code 4657 is used by 2 different Scania systems. Choose the control unit shown in your diagnostic tool:

EMS Engine Management System Unit injector for cylinder 3 It has not taken as long as expected for the control unit to build up the current in the solenoid valve. The control unit uses the battery voltage and the engine temperature to cal… Read explanation → EEC Exhaust Emission Control Exhaust gas aftertreatment injection valve V185 Fault in injection valve for exhaust gas aftertreatment V185. Read explanation →