: Verify that hydraulic fluid and engine coolant levels are correct, as some diagnostic systems may group these related subsystems during startup.
: Use a multimeter to check the resistance (
On older Doosan equipment (G2/G2+ stages), a NOx fault would manifest as generic SPN 3226 FMI 5 . On (Stage V / Tier 4 Final with Doosan DL06, DLO8, or Scania DC09/DC13 engines using Doosan’s proprietary CAN bus), VPV00105 includes self-healing logic :
state for a specific component. In this instance, the controller is unable to detect the required electrical signal from the hydraulic pump's solenoid or circuit. Potential Causes Electrical Connection Issues
Facebook·Plant Fitters and Mechanics Chat Problems and Solutions + the odd HGV Truck
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.