or use a diagnostic tool to clear the code from the history. New York University Further exploration
: Use a multimeter to check the continuity of the wiring between the EPOS (Electronic Power Optimizing System) controller and the pump solenoid.
: Moisture and debris entry at the sensor plug cause pin corrosion or loose terminal connections.
After repairs, use the onboard display or a handheld scanner to reset the error code . To do this on many Doosan models, turn the key to the ON position (engine off), navigate to the diagnostic menu, and confirm the reset. doosan fault code vpv00105 new
The ECU monitors the amperage (current) required to drive the proportional solenoid valve that regulates hydraulic oil flow to the fan motor. When the current spikes beyond the calibrated threshold (typically due to resistance dropping to near zero), the ECU logs this fault.
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: Look for any signs of physical damage or "rub-through" on the wires leading from the pump to the main controller. Test the Solenoid or use a diagnostic tool to clear the code from the history
While the code points to an electrical issue, the root cause can be mechanical or environmental:
If the code persists after cleaning the filters and checking the wiring, the issue likely lies with a failing or a fault within the Electronic Control Module itself.
The thermistor component inside the coolant temperature sensor can crack or degrade over time, breaking the internal electrical pathway and creating infinite resistance. After repairs, use the onboard display or a
: The ECU sends a variable electrical current to this valve. The valve converts the electrical signal into a proportional hydraulic pilot pressure, which adjusts the swash plate angle of the main pump to control fluid displacement.
: Chafed, stretched, or cut wires along the engine block block the signal path.
Park the machine on level ground and let the engine cool completely. Check the coolant level in the expansion tank and the radiator. If the fluid is low, refill it to the recommended line and check the machine for leaks. Step 2: Inspect the Sensor Wiring