Gardena
Gardena Robot Lawnmowers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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Error 1
Display shows “Error 1 – Outside working area” and mower stops near or beyond the boundary wire.
Boundary Loop Signal Out of Range
Error 10
Display shows “Error 10 – Cutting system blocked” and the blade disc does not rotate.
Cutting Motor Overload / Blockage
Error 11
Display shows “Error 11 – Cutting height blocked” and the mower cannot adjust its cutting height.
Cutting Height Adjustment Mechanism Jam
Error 12
Display shows “Error 12 – No power in charging station” and the mower cannot charge.
Charging Station Power Loss
Error 13
Display shows “Error 13 – Wheel motor blocked” and one side of the mower will not turn.
Individual Wheel Motor Stall
Error 14
Display shows “Error 14 – Wheel motor overloaded” during operation, often in thick grass or on slopes.
Wheel Motor Overcurrent Protection
Error 15
Display shows “Error 15 – Cutting motor overloaded” frequently, especially in heavy growth.
Cutting Motor Overcurrent Protection
Error 16
Display shows “Error 16 – Low battery” and the mower stops far from the charging station.
Battery Capacity Degradation
Error 17
Display shows “Error 17 – Battery problem” and the mower refuses to start or charge properly.
Battery Protection / Communication Fault
Error 18
Display shows “Error 18 – No communication with charging station” and the mower cannot coordinate docking.
Communication Failure Between Mower and Base
Error 19
Display shows “Error 19 – Unexpected cutting height” or similar calibration error.
Cutting Height Sensor / Calibration Fault
Error 2
Display shows “Error 2 – No loop signal” and mower will not leave the charging station.
Boundary Loop Signal Missing
Error 20
Display shows “Error 20 – Internal fault” or “Unexpected error” and the mower will not start.
Main Control Board Internal Error
Error 21
Display shows “Error 21 – Remote start problem” when trying to start from a remote area via guide wire.
Remote Start / Guide Wire Configuration Fault
Error 22
Display shows “Error 22 – Mower locked” and requires a PIN code.
Theft Protection Lockout
Error 23
Display shows “Error 23 – No loop signal, Mower limited” intermittently during operation.
Intermittent Boundary Loop Interruption
Error 24
Display shows “Error 24 – Mower in wrong working area” or similar multi-area configuration error.
Multi-Zone Boundary / Guide Configuration Fault
Error 25
Display shows “Error 25 – Alarm! Mower lifted” and the theft alarm sounds.
Lift Alarm Triggered
Error 3
Display shows “Error 3 – No drive” and the mower does not move even though the blades may spin.
Drive Motor Failure or Drive Circuit Fault
Error 4
Display shows “Error 4 – No drive, Mower limited” or similar, mower moves only a short distance or not at all.
Drive Overload or Stall Detection
Error 5
Display shows “Error 5 – Collision sensor problem” and mower stops shortly after starting.
Front Collision / Bumper Sensor Fault
Error 6
Display shows “Error 6 – Lifted” even though the mower is standing normally on the lawn.
Lift Sensor False Trigger
Error 7
Display shows “Error 7 – Tilted” while the mower is on a moderate slope or even on level ground.
Tilt Sensor Malfunction
Error 8
Display shows “Error 8 – Stuck in charging station” and the mower cannot leave the base.
Docking / Undocking Obstruction
Error 9
Display shows “Error 9 – Stuck in charging station, Mower limited” or similar, mower repeatedly tries and fails to dock correctly.
Docking Alignment Failure
Symptom
Display is blank or very dim, but the mower still appears to charge or operate partially.
Display Module or Backlight Failure
Symptom
Mower body shows signs of water inside (condensation, fogged display) and behaves erratically after rain.
Moisture Ingress into Electronics Compartment
Symptom
Mower does not charge fully; it leaves the station with low runtime even after long docking.
Incomplete Charging
Symptom
Mower does not start at the programmed times and remains in the charging station.
Scheduling / Timer Misconfiguration
Symptom
Mower emits a burning smell or the housing feels unusually hot during or after operation.
Overheating of Motor or Electronics
Symptom
Mower frequently gets stuck on small bumps, roots, or at the lawn edge and cannot free itself.
Chassis Ground Clearance / Traction Limitation
Symptom
Mower is very noisy during operation, with grinding or rattling sounds from underneath.
Mechanical Noise from Cutting System or Drive
Symptom
Mower leaves clumps of grass and the cut looks ragged, with brown tips on blades of grass.
Poor Cut Quality
Symptom
Mower leaves uncut strips of grass and the lawn looks uneven after a full mowing cycle.
Insufficient Coverage / Navigation Pattern Issue
Symptom
Mower occasionally loses the guide wire when returning to the charging station and wanders around.
Guide Wire Tracking Instability
Symptom
Mower occasionally runs outside the intended lawn area and crosses paths or gravel.
Boundary Containment Failure
Symptom
Mower stops randomly in the lawn with no error code, then resumes after a while or when moved.
Intermittent Power or Sensor Interruption
Symptom
Mower veers to one side and does not drive straight, leaving uneven patterns.
Unequal Wheel Speed or Traction
Symptom
Mower vibrates excessively, especially when the cutting system is running.
Imbalanced Cutting Disc or Blade Assembly
Symptom
Mower’s front or rear wheels leave deep tracks or ruts in the lawn.
Excessive Ground Pressure / Overuse on Soft Soil
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| Error 1 |
Display shows “Error 1 – Outside working area” and mower stops near or beyond the boundary wire.
|
Boundary Loop Signal Out of Range | View Details |
| Error 10 |
Display shows “Error 10 – Cutting system blocked” and the blade disc does not rotate.
|
Cutting Motor Overload / Blockage | View Details |
| Error 11 |
Display shows “Error 11 – Cutting height blocked” and the mower cannot adjust its cutting height.
|
Cutting Height Adjustment Mechanism Jam | View Details |
| Error 12 |
Display shows “Error 12 – No power in charging station” and the mower cannot charge.
|
Charging Station Power Loss | View Details |
| Error 13 |
Display shows “Error 13 – Wheel motor blocked” and one side of the mower will not turn.
|
Individual Wheel Motor Stall | View Details |
| Error 14 |
Display shows “Error 14 – Wheel motor overloaded” during operation, often in thick grass or on slopes.
|
Wheel Motor Overcurrent Protection | View Details |
| Error 15 |
Display shows “Error 15 – Cutting motor overloaded” frequently, especially in heavy growth.
|
Cutting Motor Overcurrent Protection | View Details |
| Error 16 |
Display shows “Error 16 – Low battery” and the mower stops far from the charging station.
|
Battery Capacity Degradation | View Details |
| Error 17 |
Display shows “Error 17 – Battery problem” and the mower refuses to start or charge properly.
|
Battery Protection / Communication Fault | View Details |
| Error 18 |
Display shows “Error 18 – No communication with charging station” and the mower cannot coordinate docking.
|
Communication Failure Between Mower and Base | View Details |
| Error 19 |
Display shows “Error 19 – Unexpected cutting height” or similar calibration error.
|
Cutting Height Sensor / Calibration Fault | View Details |
| Error 2 |
Display shows “Error 2 – No loop signal” and mower will not leave the charging station.
|
Boundary Loop Signal Missing | View Details |
| Error 20 |
Display shows “Error 20 – Internal fault” or “Unexpected error” and the mower will not start.
|
Main Control Board Internal Error | View Details |
| Error 21 |
Display shows “Error 21 – Remote start problem” when trying to start from a remote area via guide wire.
|
Remote Start / Guide Wire Configuration Fault | View Details |
| Error 22 |
Display shows “Error 22 – Mower locked” and requires a PIN code.
|
Theft Protection Lockout | View Details |
| Error 23 |
Display shows “Error 23 – No loop signal, Mower limited” intermittently during operation.
|
Intermittent Boundary Loop Interruption | View Details |
| Error 24 |
Display shows “Error 24 – Mower in wrong working area” or similar multi-area configuration error.
|
Multi-Zone Boundary / Guide Configuration Fault | View Details |
| Error 25 |
Display shows “Error 25 – Alarm! Mower lifted” and the theft alarm sounds.
|
Lift Alarm Triggered | View Details |
| Error 3 |
Display shows “Error 3 – No drive” and the mower does not move even though the blades may spin.
|
Drive Motor Failure or Drive Circuit Fault | View Details |
| Error 4 |
Display shows “Error 4 – No drive, Mower limited” or similar, mower moves only a short distance or not at all.
|
Drive Overload or Stall Detection | View Details |
| Error 5 |
Display shows “Error 5 – Collision sensor problem” and mower stops shortly after starting.
|
Front Collision / Bumper Sensor Fault | View Details |
| Error 6 |
Display shows “Error 6 – Lifted” even though the mower is standing normally on the lawn.
|
Lift Sensor False Trigger | View Details |
| Error 7 |
Display shows “Error 7 – Tilted” while the mower is on a moderate slope or even on level ground.
|
Tilt Sensor Malfunction | View Details |
| Error 8 |
Display shows “Error 8 – Stuck in charging station” and the mower cannot leave the base.
|
Docking / Undocking Obstruction | View Details |
| Error 9 |
Display shows “Error 9 – Stuck in charging station, Mower limited” or similar, mower repeatedly tries and fails to dock correctly.
|
Docking Alignment Failure | View Details |
| – |
Display is blank or very dim, but the mower still appears to charge or operate partially.
|
Display Module or Backlight Failure | View Details |
| – |
Mower body shows signs of water inside (condensation, fogged display) and behaves erratically after rain.
|
Moisture Ingress into Electronics Compartment | View Details |
| – |
Mower does not charge fully; it leaves the station with low runtime even after long docking.
|
Incomplete Charging | View Details |
| – |
Mower does not start at the programmed times and remains in the charging station.
|
Scheduling / Timer Misconfiguration | View Details |
| – |
Mower emits a burning smell or the housing feels unusually hot during or after operation.
|
Overheating of Motor or Electronics | View Details |
| – |
Mower frequently gets stuck on small bumps, roots, or at the lawn edge and cannot free itself.
|
Chassis Ground Clearance / Traction Limitation | View Details |
| – |
Mower is very noisy during operation, with grinding or rattling sounds from underneath.
|
Mechanical Noise from Cutting System or Drive | View Details |
| – |
Mower leaves clumps of grass and the cut looks ragged, with brown tips on blades of grass.
|
Poor Cut Quality | View Details |
| – |
Mower leaves uncut strips of grass and the lawn looks uneven after a full mowing cycle.
|
Insufficient Coverage / Navigation Pattern Issue | View Details |
| – |
Mower occasionally loses the guide wire when returning to the charging station and wanders around.
|
Guide Wire Tracking Instability | View Details |
| – |
Mower occasionally runs outside the intended lawn area and crosses paths or gravel.
|
Boundary Containment Failure | View Details |
| – |
Mower stops randomly in the lawn with no error code, then resumes after a while or when moved.
|
Intermittent Power or Sensor Interruption | View Details |
| – |
Mower veers to one side and does not drive straight, leaving uneven patterns.
|
Unequal Wheel Speed or Traction | View Details |
| – |
Mower vibrates excessively, especially when the cutting system is running.
|
Imbalanced Cutting Disc or Blade Assembly | View Details |
| – |
Mower’s front or rear wheels leave deep tracks or ruts in the lawn.
|
Excessive Ground Pressure / Overuse on Soft Soil | View Details |
No matching codes found
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