is primarily an electrical signal problem between the main hydraulic pump pressure sensor and the control unit. It demands immediate attention to prevent hydraulic inefficiency and potential engine stalling.
Turn the excavator's ignition key to the "ON" position with the engine off. Set the multimeter to DC Volts. Measure the voltage across the two socket terminals on the engine wiring harness side. The ECM should supply a steady 5.0V reference signal. If the meter reads 0V, check for a blown fuse in the main electrical panel or trace the harness back to the ECM to look for a pinched or severed wire. Corrective Actions and Repair Solutions
Test for continuity between the valve connector and the corresponding pins on the EPOS/ECU controller .
The machine may be difficult to start or may not restart at all. Immediate engine warning/shut-off in certain scenarios. Causes of VPV001-05 doosan fault code vpv00105 new
fault code pop up on your Doosan equipment—such as a DX180LC excavator—it usually points to an issue with a critical sensor or hydraulic pump circuit. Specifically, this code often indicates that the current is below normal
Before calling in a technician, you can perform these basic checks: Check Fluid Levels:
: This is the "Failure Mode Identifier" (FMI), which specifically means Current Below Normal Open Circuit Common Causes Wiring Damage is primarily an electrical signal problem between the
[ECU Controller] ---> (Wiring Harness / Connectors) ---> [Pump Proportional Solenoid A] ^ | +------------------- Monitors Current Return ------------------+ (Fails if Current drops)
: Once repaired, start the engine and let it reach operating temperature. Use the Doosan monitoring panel or a diagnostic scan tool to clear the inactive fault code history. Verify that the dashboard coolant temperature gauge reads accurately and the machine exits limp mode.
: Look for any signs of physical damage or "rub-through" on the wires leading from the pump to the main controller. Test the Solenoid Set the multimeter to DC Volts
Doosan fault codes are typically made up of letters and numbers that correspond to specific systems or components of the machine and the nature of the fault. Here's a general breakdown:
Wire chafing, breakages, or corrosion in the harness leading to the pilot pressure sensor.
Place your multimeter leads across the two pins of the solenoid coil.
: If the sensor fails the resistance test, unscrew it using a deep socket. Install a new OEM part. Apply a light coat of thread sealant if specified, and tighten to factory torque specifications.
: If the wiring and solenoid check out, a factory reset or software update using the Doosan Monitoring Program (DMS) may be required to recalibrate the system. JustAnswer 19 Aug 2023 —