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Diagnostics of LICCON Computer Error Codes - Liebherr LTM 1070-4.1 Crane

The Liebherr LTM 1070-4.1 mobile all-terrain crane is equipped with the advanced LICCON (Liebherr Computed Control) control and diagnostic system. This system continuously monitors operating parameters of the undercarriage and superstructure, responding to signal abnormalities from sensors, CAN/LSB bus, and ZE central units. The following service guide contains a complete list of error codes generated by the ZE central unit and I/O (input/output) modules.

In case of a fault, the system disables selected hydraulic functions or blocks crane movements to ensure maximum operator safety and structural integrity. Understanding error descriptions and repair procedures is key to quick diagnostics in field and workshop conditions.

LICCON Error Codes for Liebherr LTM 1070-4.1

Error Code Error Description / Reaction / Troubleshooting Plug C W
M00134834 ZE 1: Control diagnostic system: Extension cylinder pressure cut-off out of permissible range.
Reaction/Repair: Test program execution delayed / interrupted. Check cylinder cut-off, repeat test program.		 - E 1
M00134835 ZE 1: Control diagnostic system: Telescope extension pressure cut-off out of permissible range.
Reaction/Repair: Test program execution delayed / interrupted. Check telescope length pressure OFF, repeat test program.		 - E 1
M00134836 ZE 1: Control diagnostic system: Retraction cylinder pressure cut-off out of permissible range.
Reaction/Repair: Test program execution delayed / interrupted. Check cylinder pressure ON, repeat test program.		 - E 1
M00134837 ZE 1: Control diagnostic system: Telescope retraction pressure cut-off out of permissible range.
Reaction/Repair: Test program execution delayed / interrupted. Check telescope length pressure ON, repeat test program.		 - E 1
M00134877 ZE 1: Control diagnostic system: Telescope retraction starting current above permissible range.
Reaction/Repair: Test interruption/delay. Check valve / pump / pressure.		 - E 1
M00134878 ZE 1: Control diagnostic system: Telescope retraction starting current below permissible range.
Reaction/Repair: Test interruption/delay. Check valve / pump / pressure.		 - E 1
M00134879 ZE 1: Control diagnostic system: Telescope extension starting current above permissible range.
Reaction/Repair: Test interruption/delay. Check valve / pump / pressure.		 - E 1
M00134880 ZE 1: Control diagnostic system: Telescope extension starting current below permissible range.
Reaction/Repair: Test interruption/delay. Check valve / pump / pressure.		 - E 1
M00134881 ZE 1: Control diagnostic system: Telescope retraction speed below permissible range.
Reaction/Repair: Test interruption/delay. Check valve / pump / pressure.		 - E 1
M00134882 ZE 1: Control diagnostic system: Telescope retraction speed above permissible range.
Reaction/Repair: Test interruption/delay. Check valve / pump / pressure.		 - E 1
M00134883 ZE 1: Control diagnostic system: Telescope extension speed below permissible range.
Reaction/Repair: Test interruption/delay. Check valve / pump / pressure.		 - E 1
M00134884 ZE 1: Control diagnostic system: Telescope extension speed above permissible range.
Reaction/Repair: Test interruption/delay. Check valve / pump / pressure.		 - E 1
M00134885 ZE 1: Control diagnostic system: Telescope retraction hysteresis out of permissible range.
Reaction/Repair: Check proportional flow control valve.		 - E -
M00134886 ZE 1: Control diagnostic system: Telescope extension hysteresis out of permissible range.
Reaction/Repair: Check proportional flow control valve.		 - E -
M00135608 ZE 1: Telescope operation: Main boom telescope extension cut-off by working area limiter ABB. - B -
M00135609 ZE 1: Telescope operation: Main boom telescope retraction cut-off by working area limiter ABB. - B -
M00135619 ZE 1: Telescope operation: Missing or incorrect operating mode - function shutdown. - B -
M00135620 ZE 1: Telescope operation: Cut-off by load moment limiter (LMB Stop). - B -
M00135621 ZE 1: Telescope operation: Extension release cut-off by LMB. - B -
M00135622 ZE 1: Telescope operation: Cut-off due to risk of tipping backwards. - B -
M00135630 ZE 1: Telescope operation: Command controller (Master switch 1) defective or missing. - B -
M00135631 ZE 1: Telescope operation: Command controller (Master switch 2) defective or missing. - B -
M00135632 ZE 1: Telescope operation: Command controller (Master switch 3) defective or missing.
Reaction/Repair: Operational shutdown. Temporarily release controller or eliminate system error.		 - B 1
M00135635 ZE 1: Telescope operation: Right foot switch defective or missing. - B -
M00135636 ZE 1: Telescope operation: Left foot switch defective or missing.
Reaction/Repair: Operational shutdown. Temporarily release controller or rectify fault.		 - B 1
M00135639 ZE 1: Telescope operation: Cut-off by operator seat contact. - B -
M00135640 ZE 1: Telescope operation: Length measurement cut-off - sensor defective or missing. - B -
M00135644 ZE 1: Telescope operation: Cut-off - crane engine not running.
Reaction/Repair: Start crane engine. For test purposes, use "without engine" bypass.		 - B -
M00135649 ZE 1: Telescope operation: Hoist limit switch 4 cut-off.
Reaction/Repair: Operate winch in opposite direction until limit switch is released. Cut-off can be bridged (danger!).		 - B -
M00135650 ZE 1: Telescope operation: Cut-off by hoist limit switch 1. - B -
M00135651 ZE 1: Telescope operation: Cut-off by hoist limit switch 2. - B -
M00135652 ZE 1: Telescope operation: Cut-off by hoist limit switch 3. - B -
M00135660 ZE 1: Telescope operation: Telescope unlocking impossible - cylinder is not locked. - B -
M00135661 ZE 1: Telescope operation: Telescope unlocking impossible - no release from LMB side. - B -
M00135662 ZE 1: Telescope operation: Telescope/cylinder unlocking impossible - simultaneous selection of both functions. - B -
M00135663 ZE 1: Telescope operation: Cylinder unlocking impossible - telescope is not locked. - B -
M00135664 ZE 1: Telescope operation: Cylinder unlocking impossible - automatic mode active. - B -
M00135665 ZE 1: Telescope operation: Telescope unlocking impossible - automatic mode active. - B -
M00135681 ZE 1: Telescope operation: Hoist limit switch 1 defect. - B -
M00135682 ZE 1: Telescope operation: Hoist limit switch 2 defect. - B -
M00135683 ZE 1: Telescope operation: Hoist limit switch 3 defect. - B -
M00135689 ZE 1: Telescope operation: Hoist limit switch 4 defect. Operational shutdown. - B -
M00135690 ZE 1: Telescope operation: Cylinder locking is neither unlocked nor in the pin section. - B -
M00135691 ZE 1: Telescope operation: Telescope extension/retraction cut-off - cylinder is not locked with pin. - B -

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LICCON Error Codes

Error Code Error Description / Reaction / Troubleshooting Plug C W
M00136019 ZE 1: Additional equipment operation: Cut-off - missing or incorrect operating mode.
Reaction/Repair: Operational shutdown without possibility of bridging. Do not switch to WW/KSPW mode during telescoping.		 - B -
M00137049 ZE 1: Cab instruments: Operator seat contact inactive, crane movements blocked.
Reaction/Repair: Sit on the seat or check LICCON input, wiring, and sensor.		 - B 1
M00137201 ZE 1: Right armrest instruments: Command controller 1X not in neutral position during startup.
Reaction/Repair: Release controller or check connections and sensor.		 - B 1
M00137312 ZE 1: Left armrest instruments: Command controller 2Y not in neutral position during startup.
Reaction/Repair: Release controller or check LICCON input and wiring.		 - B 1
M00139800 ZE 1: Operational diagnostics system: Interruption - command controller defective or incorrectly deflected.
Reaction/Repair: Pay attention to movement direction, repeat test program.		 - B 1
M00139801 ZE 1: Operational diagnostics system: Interruption - command controller defective or missing.
Reaction/Repair: Check joystick, repeat test program.		 - B 1
M00139802 ZE 1: Operational diagnostics system: Interruption - incorrect or missing operating mode.
Reaction/Repair: Set correct operating mode, dismantle equipment if necessary.		 - B 1
M00139804 ZE 1: Operational diagnostics system: Interruption - incorrect position of hoisting/telescoping switch.
Reaction/Repair: Switch to appropriate position, clear error, perform Reset.		 - B 1
M00139810 ZE 1: Operational diagnostics system: Interruption - winch blocked.
Reaction/Repair: Disconnect winch, repeat test program.		 - B 1
M00139812 ZE 1: Operational diagnostics system: Interruption - rope length too short to spool.
Reaction/Repair: Check reeving, spool out more rope, repeat test.		 - B 1
M00139814 ZE 1: Operational diagnostics system: Rigging aid was not properly disabled.
Reaction/Repair: Incorrect operating status. Press F key, end active program.		 - B 1
M00139815 ZE 1: Operational diagnostics system: Switch telescoping to "Manual" mode.
Reaction/Repair: Switch to manual mode, clear error, reset and restart.		 - B 1
M00139820 ZE 1: Operational diagnostics system: Interruption - boom angle out of specified range.
Reaction/Repair: Set correct luffing angle, repeat test.		 - B 1
M00139821 ZE 1: Operational diagnostics system: Interruption - telescope length out of specified range.
Reaction/Repair: Extend boom to required length, repeat test.		 - B 1
M00139822 ZE 1: Operational diagnostics system: Interruption - hook load out of specified range.
Reaction/Repair: Check maximum hook load, repeat test.		 - B 1
M00139823 ZE 1: Operational diagnostics system: Interruption - incorrect reeving.
Reaction/Repair: Check minimum number of rope falls, repeat test.		 - B 1
M00139824 ZE 1: Operational diagnostics system: Interruption - hoist limit switch active/defective/missing.
Reaction/Repair: Check limit switch, repeat test.		 - B 1
M00139825 ZE 1: Operational diagnostics system: Interruption - cylinder length out of specified range.
Reaction/Repair: Set correct cylinder length (preferably with 100% locking).		 - B 1
M00161001 I/O Module 1: System error OS-C167 - processor register initialization error.
Reaction/Repair: Switch ignition OFF/ON. If repeated, replace I/O module.		 - E 2
M00161002 I/O Module 1: System error OS-C167 - EPROM/FLASH checksum error during initialization.
Reaction/Repair: Switch ignition OFF/ON. If fault repeats, replace I/O module.		 - E 2
M00161006 I/O Module 1: System error OS-C167 - RAM memory error during initialization.
Reaction/Repair: Switch ignition OFF/ON. If repeated, replace module.		 - E 2
M00161013 I/O Module 1: System error OS-C167 - incorrect EPROM/FLASH checksum.
Reaction/Repair: Error on display. Switch ignition OFF and ON.		 - E 2
M00161016 I/O Module 1: System error OS-C167 - controller/system watchdog timeout.
Reaction/Repair: Note error, switch ignition ON/OFF, contact service.		 - E 2
M00161031 I/O Module 1: System error OS-C167 - CPU processor test failed.
Reaction/Repair: Processor defective, replace I/O module.		 - E 2
M00161032 I/O Module 1: System error OS-C167 - CAN transmission timeout (driver timeout).
Reaction/Repair: Switch ignition OFF/ON. If repeated, replace I/O module.		 - E 2
M00161033 I/O Module 1: System error OS-C167 - analog input monitoring timeout.
Reaction/Repair: Restart ignition, if error persists replace controller.		 - E 2
M00161034 I/O Module 1: System error OS-C167 - operating unit SPI bus timeout.
Reaction/Repair: Restart ignition, if error persists replace controller.		 - E 2
M00161068 I/O Module 1: System error OS-C167 - illegal processor interrupt.
Reaction/Repair: Note message, restart ignition or contact service.		 - E 2
M00161071 I/O Module 1: System error OS-C167 - incorrect configuration or firmware.
Reaction/Repair: Reload software from ZE unit.		 - E 2
M00161080 I/O Module 1: System error OS-C167 - critical internal software error.
Reaction/Repair: Notify Liebherr factory service.		 - E 2
M00161082 I/O Module 1: System error OS-C167 - defective hardware watchdog circuit.
Reaction/Repair: Replace I/O input/output module.		 - E 2
M00161088 I/O Module 1: System error OS-C167 - configuration does not match software version.
Reaction/Repair: Check LICCON configuration, perform software download (EAM download).		 - E 2

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LICCON Error Codes

Error Code Error Description / Reaction / Troubleshooting Plug C W
M00172052 I/O Module 1: Output DEA0 open, load too low, or short circuit to power supply.
Reaction/Repair: Check wiring for open circuit, measure load current, replace module if necessary.		 X613:17 E 1
M00172053 I/O Module 1: Missing or insufficient power supply to output transistor DEA0.
Reaction/Repair: Check power supply and fuse of I/O module.		 X613:17 E 1
M00172054 I/O Module 1: Output DEA0 - short circuit to supply voltage.
Reaction/Repair: Check output line for short circuit.		 X613:17 E 1
M00172055 I/O Module 1: Output DEA0 - excessive temperature, short circuit to ground, or overload.
Reaction/Repair: Check output for short circuits and current overloads.		 X613:17 E 1
M00172152 I/O Module 1: Output DEA1 open, load too low, or short circuit to power supply. X613:15 E 1
M00172153 I/O Module 1: Missing or insufficient power supply to output transistor DEA1. X613:15 E 1
M00172154 I/O Module 1: Output DEA1 - short circuit to supply voltage. X613:15 E 1
M00172155 I/O Module 1: Output DEA1 - temperature too high, short circuit to ground, or overload. X613:15 E 1
M00172252 I/O Module 1: Output DEA2 open, load too low, or short circuit to voltage. X613:13 E 1
M00172253 I/O Module 1: Missing power supply to output transistor DEA2. X613:13 E 1
M00172254 I/O Module 1: Output DEA2 - short circuit to supply voltage. X613:13 E 1
M00172255 I/O Module 1: Output DEA2 - current overload or short circuit to ground. X613:13 E 1
M00172352 I/O Module 1: Output DEA3 open or short circuit to voltage. X613:11 E 1
M00172353 I/O Module 1: Missing power supply to output transistor DEA3. X613:11 E 1
M00172354 I/O Module 1: Output DEA3 - short circuit to power supply. X613:11 E 1
M00172355 I/O Module 1: Output DEA3 - overheating, short circuit, or overload. X613:11 E 1
M00172452 I/O Module 1: Output DEA4 open or short circuit to power supply. X613:9 E 1
M00172453 I/O Module 1: Missing power supply to output transistor DEA4. X613:9 E 1
M00172454 I/O Module 1: Output DEA4 - short circuit to power supply. X613:9 E 1
M00172455 I/O Module 1: Output DEA4 - overload / short circuit to ground. X613:9 E 1
M00172552 I/O Module 1: Output DEA5 open or short circuit to power supply. X613:7 E 1
M00172553 I/O Module 1: Missing power supply to output transistor DEA5. X613:7 E 1
M00172554 I/O Module 1: Output DEA5 - short circuit to voltage. X613:7 E 1
M00172555 I/O Module 1: Output DEA5 - overheating / short circuit / overload. X613:7 E 1
M00172652 I/O Module 1: Output DEA6 open or short circuit to power supply. X613:5 E 1
M00172653 I/O Module 1: Missing power supply to output transistor DEA6. X613:5 E 1
M00172654 I/O Module 1: Output DEA6 - short circuit to power supply. X613:5 E 1
M00172655 I/O Module 1: Output DEA6 - overload / short circuit to ground. X613:5 E 1
M00172752 I/O Module 1: Output DEA7 open or short circuit to voltage. X613:3 E 1
M00172753 I/O Module 1: Missing power supply to output transistor DEA7. X613:3 E 1
M00172754 I/O Module 1: Output DEA7 - short circuit to voltage. X613:3 E 1
M00172755 I/O Module 1: Output DEA7 - overload or short circuit to ground. X613:3 E 1
M00173481 I/O Module 1: Voltage input E4 - short circuit to power supply or open circuit.
Reaction/Repair: Brake pressure symbol 1 flashes. Check signal at sensor.		 X612:9 E 1
M00173581 I/O Module 1: Voltage input E5 - short circuit to power supply or open circuit.
Reaction/Repair: Brake pressure symbol 2 flashes. Check sensor wire.		 X612:7 E 1
M00173782 I/O Module 1: Voltage input E7 - short circuit to ground or incorrect 10 mA DC current. X612:3 E 1
M00173783 I/O Module 1: Input E7 - short circuit to power supply, open circuit, or no voltage. X612:3 E 1
M00179052 I/O Module 1: Output A0 open, load too low, or short circuit. X613:18 E 1
M00179053 I/O Module 1: Output A0 - missing transistor power supply. X613:18 E 1
M00179054 I/O Module 1: Output A0 - short circuit to power supply. X613:18 E 1
M00179055 I/O Module 1: Output A0 - excessive temperature, short circuit, or overload. X613:18 E 1
M00183401 I/O Module 1: SPI control panel - incorrect data transfer (timeout).
Reaction/Repair: Error on display. Automatic restart of SPI controller.		 X614:1..8 E 1
M00183403 I/O Module 1: SPI control panel - wire break or short circuit to power supply. X614:1..8 E 1
M00183407 I/O Module 1: SPI control panel - device defective, missing, or incorrect ID identifier. X614:1..8 E 1
M00184050 I/O Module 1: LSB-B bus, node 0 reports incorrect sensor type.
Reaction/Repair: Check address assignment on LSB screen, install correct sensor.		 X613:4/6 E 2
M00184053 I/O Module 1: LSB-B bus, node 0 does not respond or was disconnected during operation.
Reaction/Repair: Check connection, if no improvement replace sensor.		 X613:4/6 E 1
M00184065 I/O Module 1: LSB-B bus, node 0 reports impermissible error in self-test.
Reaction/Repair: Trouble-free operation is not guaranteed. Replace sensor immediately.		 X613:4/6 E 2
M00184153 I/O Module 1: LSB-B bus, node 1 does not respond or was disconnected during operation. X613:4/6 E 1
M00184665 I/O Module 1: LSB-B bus, node 6 reports impermissible error in self-test. X613:4/6 E 2

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LICCON Error Codes

Error Code Error Description / Reaction / Troubleshooting Plug C W
M00187252 I/O Module 1: LSB-B data transmission - bus collision detected, communication interrupted.
Reaction/Repair: Verification of sensor addressing on the bus required.		 X613:4/6 E 0
M00187255 I/O Module 1: LSB-B data transmission - connection damaged, short circuit to power supply.
Reaction/Repair: Check bus line, disconnect sensors, check LSB fuse.		 X613:4/6 E 2
M00187256 I/O Module 1: LSB-B data transmission - no power supply or short circuit to ground.
Reaction/Repair: Check bus wiring and sensors for short circuits to ground.		 X613:4/6 E 2
M00187531 I/O Module 1: Engine CAN node - transmission faulty/missing, cycle time exceeded.
Reaction/Repair: Substitute values will be used. Check engine CAN bus.		 X615:5/6 E 1
M00187631 I/O Module 1: Transmission CAN node - no data transmission or communication error.
Reaction/Repair: Check transmission CAN lines and transmission controller.		 X615:5/6 E 1
M00187731 I/O Module 1: ABV brake systems (ABS/ASR) CAN node – data transmission error.
Reaction/Repair: Check CAN connectors at ABS/ASR controller.		 X615:5/6 E 1
M00189903 I/O Module 1: CAN transmission interrupted after permanent communication error.
Reaction/Repair: Check bus line, neutral point (terminator), or replace I/O module.		 X615:5/6 E 1
M00189911 I/O Module 1: Permanent connection error with CAN bus.
Reaction/Repair: Disconnect CAN nodes sequentially to locate defective module.		 X615:5/6 E 1
M00192001 I/O Module 1: Engine control - prolonged communication disruption I/O <> engine.
Reaction/Repair: Engine control in emergency mode. Check engine CAN bus.		 - E 1
M00192110 I/O Module 1: Transmission control - communication error between gear selector panel and transmission.
Reaction/Repair: Transmission in emergency driving program. Check CAN connections.		 - E 1
M00192113 I/O Module 1: Driving selection buttons fault - blocked/stuck button on panel.
Reaction/Repair: System prevents gear engagement. Release button or replace panel.		 - E 1
M00193456 I/O Module 1: Lighting control - defective vehicle indicator/turn signal.
Reaction/Repair: Check light bulbs and undercarriage turn signal installation.		 - E 1
M00194190 I/O Module 1: Missing LSB bus node - central unit ZE does not respond.
Reaction/Repair: Check LSB network and power supply to ZE computer.		 - E 1
M00195150 I/O Module 1: Transmission operation in emergency gear selection mode. - B -
M00195176 I/O Module 1: Direction selection blocked - service brake is not depressed. - B -
M00195501 I/O Module 1: Axle suspension operation - attempt to use 2-hand function without depressing second button.
Reaction/Repair: Press both buttons simultaneously on the panel.		 - B -
M00195505 I/O Module 1: Axle suspension operation from undercarriage not allowed in selected superstructure mode.
Reaction/Repair: Switch mode selector to Undercarriage.		 - B -
M00195570 I/O Module 1: Undefined axle suspension state - neither locked nor sprung.
Reaction/Repair: Check axle locking and suspension limit switches.		 - B -
M00195640 I/O Module 1: Vehicle leveling impossible with locked axle suspension.
Reaction/Repair: Switch axles to sprung mode.		 - B -
M00195643 I/O Module 1: Undercarriage leveling/leveling impossible - transmission is not in neutral (N).
Reaction/Repair: Switch transmission to neutral position N.		 - B -
M00195951 I/O Module 1: Longitudinal lock impossible - off-road gear disengaged.
Reaction/Repair: First engage off-road gear of transfer case.		 - B -
M00196052 I/O Module 1: Transverse lock activation without prior activation of longitudinal lock.
Reaction/Repair: Activate longitudinal differential lock first.		 - B -

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