New Holland 19182 – New Holland Dosing Control Unit Dcu: Reverting valve (4-2 way valve) electrically – short circuit to ground – P20A2 vent valve (reductant purge control valve) – short circuit low

The fault code indicates an electrical issue involving the reverting valve (4-2 way valve) and the P20A2 vent valve (reductant purge control valve). Specifically, there is a short circuit to ground and a short circuit low in the circuit associated with these components.

1. 1

   The wiring and connections related to the reverting valve (4-2 way valve)

2. 2

   The wiring and connections related to the P20A2 vent valve (reductant purge control valve)

3. 3

   The integrity of the circuit associated with the reverting valve (4-2 way valve) and the P20A2 vent valve (reductant purge control valve)

1. 1

   Inspect the wiring and connections for the reverting valve (4-2 way valve)

   Check for any signs of damage, wear, or improper connections.

2. 2

   Inspect the wiring and connections for the P20A2 vent valve (reductant purge control valve)

   Check for any signs of damage, wear, or improper connections.

3. 3

   Test the circuit associated with the reverting valve (4-2 way valve) and the P20A2 vent valve (reductant purge control valve)

   Use appropriate testing equipment to identify and confirm the presence of a short circuit to ground or a short circuit low.