Doosan Fault Code Vpv00105 New Review
Unlike older sensors, the new generation NOx sensor probe is shorter to fit tighter exhaust packages.
The sensor operates on a 5V reference line from the ECU. If the ECU’s ground is poor (often due to a loose battery ground or corroded chassis ground), the reference voltage floats, causing incorrect sensor readings.
Older Doosan codes (VP_ _ _ _) didn’t differentiate between electrical failure and hydraulic-mechanical oscillation. VPV00105 specifically indicates the controller saw the solenoid voltage deviate from commanded value more than 5 times per second — a dynamic fault, not just open/short circuit.
This report details the technical status and troubleshooting steps for the VPV001-05 fault code observed on Doosan machinery. 1. Fault Identification Code: VPV001-05 Component: Main Pump Proportional Valve (P/V)
Failure Mode Identifier (FMI) -05: Current below normal or open circuit doosan fault code vpv00105 new
Likely Impact: Restricted machine movement, loss of hydraulic power in specific functions, or complete pump stroke failure if the valve cannot be actuated. 2. Technical Analysis
The VPV code series typically relates to the Pump Proportional Valve (also known as the EPPR valve) which regulates hydraulic pump output based on signals from the EPOS controller. The "-05" suffix indicates that the electrical current being sent to the valve is lower than the expected operating range, often pointing to a physical break in the electrical circuit or a disconnected plug. 3. Troubleshooting & Diagnostic Steps Follow these steps to isolate the cause: Step 1: Visual Inspection Locate the P1 (main) pump and its proportional valves.
Inspect the electrical connector on the valve for loose pins, corrosion, or moisture.
Check for frayed or pinched wiring in the harness between the valve and the machine controller. Step 2: Resistance Check Unlike older sensors, the new generation NOx sensor
Disconnect the valve and use a multimeter to check the internal resistance of the solenoid coil. Compare this to the manufacturer’s specifications (typically found in the Doosan Service Manual). A reading of "OL" (open loop) indicates a dead coil. Step 3: Continuity Check
Verify continuity in the wiring harness from the controller output pins to the valve connector pins to rule out a broken wire. Step 4: Hydraulic Check
Ensure hydraulic fluid levels are adequate, though this is less likely to trigger a "-05" electrical current error. 4. Recommended Resolution
Wiring Repair: If the harness is damaged, repair the wiring or replace the specific sub-harness. This report details the technical status and troubleshooting
Component Replacement: If the coil resistance is out of spec, replace the proportional valve solenoid.
System Reset: Once repaired, the code may need to be cleared using the onboard display or Doosan Diagnostic Software.
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9mo. OCR: NO Real Time Failure Information Code Description VPV001 05 PUMP P/V （A), Current below normal Description PUMP ۷/٧ (A).
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Anyone know the cure for this on a Doosan? Thanks - Facebook