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Although the code is electrical, actual low coolant can create conditions that trigger the sensor to send an out-of-range signal.
Elias stared at the hydraulic controls. He thought about the sheer force required to stop a 50-ton excavator mid-stroke. The machine hadn't stalled. It had chosen to stop.
Understanding how the Doosan Electronic Control Unit (ECU) structures this fault code simplifies targeted troubleshooting:
: A break in the wiring harness or a corroded connector between the ECU and the turbo actuator.
The response was instantaneous.
: Measure the resistance (Ohms) of the P/V solenoid coil itself. Compare this value to the specifications in your machine's service manual (typically a few dozen Ohms). Hydraulic Levels
: Use a digital multimeter set to Ohms ( Ωcap omega
If the machine has two identical hydraulic pumps, consider a "swap test."