: Unplug the solenoid and check for resistance across the pins. If the reading is "infinite" or "O.L.", the solenoid is dead and needs replacement.
: Sometimes the internal coil of the proportional valve has burnt out, causing it to draw less power than the computer expects. The Fix : doosan fault code vpv001-05
Compare the reading against the manufacturer’s specifications (typically found in the service manual for your specific model, such as the Doosan DX180LC or DX140W). : Unplug the solenoid and check for resistance
: The coil is "open" (internal break) and the solenoid must be replaced. Zero Resistance : The coil is shorted. 3. Circuit Continuity Check doosan fault code vpv001-05