Liebherr Fault Code

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E 030

Hydraulic / Engine Oil Temperature Creep

System

Cooling

Symptom

Hydraulic / Engine Oil Temperature Creep

Diagnosis & fix steps

LOGIC: Cooling Fan Proportional Solenoid (Y10.2 / Y347) Cable Defect. ACTION: Check 24V supply and harness continuity to the fan control solenoid valve. Test solenoid coil resistance to verify hydraulic fan pump engagement.

Red Seal field insights

Thermal Safety: Fail-safe logic defaults hydraulic fan to maximum stroke if the signal cable breaks, preventing oil breakdown during hard pile drilling.

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