E40D01 Mercedes Fault Code :
Read the description of E40D01 in MCM02TuEURO and the engine lights up for MCM02TuEURO - MCM Motor Control Module code, there are some possible causes for it.
Regeneration of diesel particulate filterThe limit value calculated by the control unit for the temperature on the '17B03: Temperature sensor, exhaust gas downstream of SCR catalytic converter' component was dropped below.