Liebherr Fault Code
Free · no signup0x0502
Multiple Mast Sensor Faults (%IW2.xx)
System
Communication
Symptom
Multiple Mast Sensor Faults (%IW2.xx)
Diagnosis & fix steps
LOGIC: CANopen Fieldbus Communication Lost with Decentralized I/O Node +4V.
ACTION: Measure terminating resistance across CAN High and Low pins at node +4V (spec: 60Ω across network). Inspect 24V field supply fuse +4F12 and check umbilical CAN twisted pair.
Red Seal field insights
I/O Node Drop: If the remote I/O slice module at the mast foot loses bus communication or power, the Litronic CPU displays simultaneous open-circuit errors for every sensor on that branch.
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