5DF0E3 Mercedes Fault Code :
Read the description of 5DF0E3 in ACM2TuEURO and the engine lights up for ACM2TuEURO TuEURO Aftertreatment Control Module code, there are some possible causes for it.
The output of component '17A04: AdBlue metering unit control unit' for the power supply of component '17Y03: SCR exhaust aftertreatment AdBlue metering valve' has a short circuit to positive.