New Holland 19181 – DCU: Reverting valve (4-2way valve?) electrically | Short circuit to battery | P20A3 Vent valve (Reductant Purge Control Valve) -short circuit high

The fault code indicates an electrical issue involving a reverting valve (4-2way valve?), a short circuit to battery, and a short circuit high in the P20A3 Vent valve (Reductant Purge Control Valve). The exact nature of the fault is not fully specified, but it involves an electrical malfunction in one or more of these components.

1. 1

   The electrical connections and wiring of the reverting valve (4-2way valve?)

2. 2

   The P20A3 Vent valve (Reductant Purge Control Valve) for signs of damage or short circuit

3. 3

   The circuit for the short circuit to battery