Liebherr Fault Code

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E 314

Engine / Mast Controller Communication Loss

System

Communication

Symptom

Engine / Mast Controller Communication Loss

Diagnosis & fix steps

LOGIC: CAN Bus Time-Out (Engine ECU to Main Control Unit U47). ACTION: Check 120Ω termination resistance across terminal block X616. Inspect CAN High / Low twisted pairs between engine casing and cab controller.

Red Seal field insights

CAN Architecture: Loss of cyclic heartbeat messages between engine PLD and main controller forces hydraulic safety cut-offs.

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