Doosan Fault Code Vpv00105 New May 2026
Do not assume the new pump is faulty. Over 80% of VPV00105 reports on new pumps are electrical – sensor mismatch, pin fitment, or missing calibration. Always verify sensor voltage before replacing the pump assembly.
Document Version: 1.0
Applicable Doosan Models: 2015–Present (excluding electric-drive models)
Related Codes: VPV00104 (low voltage), VPV00106 (signal erratic)
For further assistance, contact Doosan Service Support with the machine serial number and pump manufacturing date code.
Doosan machines operate in harsh environments. The wiring harness leading from the main pump to the ECU can suffer from:
| Step | Check | Tool | Expected |
|------|-------|------|----------|
| 1 | Solenoid resistance (pump regulator) | Multimeter | 5–7 Ω |
| 2 | PWM signal duty cycle at idle | Oscilloscope | 20–25% |
| 3 | Voltage between solenoid low side and chassis ground | DMM | <0.2V |
| 4 | Pump angle sensor feedback (if equipped) | Doosin Diagnostic Tool | 0.5–4.5V linear |
Most overlooked: Oil aeration causing solenoid dither instability — the controller sees erratic feedback and logs VPV00105.
The keyword “new” attached to this code appears for two primary reasons:
Fault code VPV00105 is a critical electrical fault that prevents the machine from regulating its cooling fan speed. While the immediate instinct might be to replace the ECU, the fault is almost exclusively caused by a failure at the "end of the line"—specifically the proportional valve coil or the wiring leading to it. A simple resistance check of the valve coil is the most efficient way to isolate the failed component.
The Doosan fault code VPV001-05 indicates that the PUMP P/V (A) current is below normal. This is typically an electrical error suggesting an open circuit in the proportional pressure-reducing valve of the hydraulic pump. Error Breakdown
Component: Proportional Pressure-Reducing Valve for Pump A (P1 Pump).
Condition: The controller (V-ECU) detects that the electrical current flowing to the valve is lower than the expected operating range.
Symptoms: You may experience sluggish hydraulic response, loss of power under load, or a total "limp mode" where the machine operates at a fixed, reduced capacity. Troubleshooting & Solutions doosan fault code vpv00105 new
Experts from JustAnswer and Scribd recommend the following steps:
Inspect Connections: Check the electrical connector on the proportional valve. Look for loose pins, corrosion, or moisture ingress.
Verify Wiring Integrity: Check the wiring harness between the pump and the controller for any breaks, pinches, or rubbing that could cause an open circuit.
Test the Valve Solenoid: Use a multimeter to check the resistance (
) of the solenoid. For many Doosan excavators, a typical reading is approximately 25∘C25 raised to the composed with power C
Check Fuses and Relays: A blown fuse or faulty relay in the control circuit can prevent power from reaching the valve.
Monitor Hydraulic Fluid: While primarily an electrical code, ensure hydraulic fluid levels are correct to prevent secondary pressure sensor errors. Resetting the Code
Once the underlying issue is fixed, you can often clear the code by: Restarting the machine and cycling the ignition.
Using a dedicated diagnostic tool like the Doosan Laptop Diagnostic Tool (DLDT) for a factory software reset.
Do you have a multimeter on hand to test the resistance of the pump solenoid? Anyone know the cure for this on a Doosan? Thanks
Description VPV001 05 PUMP P/V (A), Current below normal Description PUMP ۷/٧ (A). Current below normal. Facebook·Paul Brown Anyone know the cure for this on a Doosan? Thanks Do not assume the new pump is faulty
8mo. OCR: NO Real Time Failure Information Code Description VPV001 05 PUMP P/V （A), Current below normal Description PUMP ۷/٧ (A). Facebook·Paul Brown Doosan Dx55R Mini Excavator Check Engine Code E007748-04
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.
Potential causes include:
The search for “doosan fault code vpv00105 new” reflects a real shift: newer Doosan Tier 4 machines are more electrically sensitive, and VPV00105 is no longer a rare ghost code. The good news? In 2025, it’s highly fixable without major component replacement. Start with the pressure sensors and harness chafe inspection—9 out of 10 times, that resolves it.
If you’re a fleet manager, document every occurrence of VPV00105. Doosan’s engineering team has acknowledged that a batch of pressure sensors from mid-2022 had a higher-than-acceptable voltage drift rate. Your data could qualify for a warranty extension.
Need specific pinouts or G-SCAN calibration steps? Leave a comment or contact your regional Doosan Construction Equipment dealer with your machine’s serial number and software version.
Last updated: March 2025. Always refer to Doosan Infracore North America’s latest service bulletins for VPV codes.
The Doosan fault code indicates that the Pump P1 (A) current is below normal
. This error typically points to an electrical or hydraulic issue involving the primary hydraulic pump (P1) on excavators, such as the Doosan DX180LC Understanding the Code
When the machine's control unit detects that the electrical current sent to the P1 pump solenoid is lower than the expected operating range, it triggers this "active" fault. An active code means the problem is currently occurring and may affect machine performance or safety. Potential Causes Electrical Wiring Issues
: Damaged, frayed, or corroded wires in the harness connecting the controller to the pump solenoid. Solenoid Failure Document Version: 1
: The P1 pump solenoid itself may be faulty, having high internal resistance or an open circuit. Connector Problems
: Loose or dirty electrical connectors at the pump or the main control valve. Hydraulic System Strain
: Though less common for this specific "current" code, extreme hydraulic issues can sometimes manifest as electrical sensor anomalies. Troubleshooting Steps
To resolve the VPV001-05 error, follow these diagnostic steps: Inspect Connections
: Check the electrical plugs on the P1 pump solenoids. Ensure they are tight and free of corrosion or hydraulic fluid. Check the Wiring Harness
: Look for any signs of physical damage or "rub-through" on the wires leading from the pump to the main controller. Test the Solenoid
: Use a multimeter to check the resistance of the P1 solenoid. Compare the reading to the specifications in your specific Doosan service manual. Monitor Voltage
: Verify that the controller is sending the correct voltage to the solenoid during operation. Clear and Restart : Once the physical issue is addressed, you may need to restart the system
or use a diagnostic tool to clear the code from the history. New York University Further exploration
Review a detailed troubleshooting discussion for this specific code on JustAnswer
Learn the difference between active and inactive fault codes in this Tech Tips video Consult general Doosan error code documentation for reset procedures. Are you seeing any physical symptoms
like sluggish movement or a total loss of hydraulic power in specific functions? Doosan Forklifts Error Codes - CLaME