19181 Error Code

There are 2 kind of error description.

Description:

57 Reverting valve (4-2way valve?) electrically - Short circuit to battery - P20A3 Vent valve (Reductant Purge Control Valve) Short circuit high

Reverting valve (4-2way valve?) electrically - Short circuit to battery - P20A3 Vent valve (Reductant Purge Control Valve) -short circuit high