VW Short Fault

What does 43 mean?

This fault indicates that excessive current has been detected between the 'V' and 'W' output terminals of the controller. This is typically caused by a short circuit either within the motor windings themselves or in the external wiring connecting the controller to the motor. This is a critical fault that can cause immediate and severe damage to the controller's inverter section.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the external wiring between the controller and the motor for any signs of insulation damage or phase-to-phase shorts.