TerraMow error codes: what each E code means and the fix
TerraMow robot mowers report faults as codes that start with E, such as E0903 or E0001. TerraMow's V Series manual for the V1000 and V600 lists 48 of them, and all 48 are here with TerraMow's own fix.
Researched by Riley Hart · updated Nov 12, 2026 · How we research
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TerraMow E codes are grouped by part. E00 codes cover the blade disc, E01 the cutting height module, E02 and E04 lifting and tilting, E05 the wheels, E06 and E07 the battery and charging, E08 the vision sensor, E09 getting stuck, docking and route planning, and E14 the bumper, temperature, base station position and anti-theft. For most hardware codes the fix is to turn off the main power switch on the underside, wait 10 seconds and turn it back on. If a code survives that, email [email protected].
| Code | What it means | Fix from TerraMow |
|---|---|---|
| E0001 | Blade disc blocked | Turn off the main switch, remove anything caught in the blade disc and check it spins freely |
| E0002 | Blade disc motor fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0003 | Blade jammed, or dense tall grass made the motor overheat | Check the blade disc is not blocked. Cut dense or tall grass below 6 cm (2.3 in) by hand first |
| E0004 | Blade disc motor fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0101 | The cutting height module is blocked | Turn off the main switch, clean the height module above the blade disc, clear stones or branches under the robot, restart and set the height again |
| E0102 | Cutting height module fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0103 | The cutting height module is blocked | Turn off the main switch, clean the height module above the blade disc, clear stones or branches under the robot, restart and set the height again |
| E0201 | The robot was lifted while working | Put the robot on a flat, open surface to resume |
| E0202 | The robot is lifted and cannot start | Put the robot on a flat, open surface to start |
| E0301 | The safety key is missing or not seated | Insert the safety key into its socket on the underside of the robot |
| E0401 | The robot tilted too far while working, likely on a slope | Put the robot on a flat, open surface to resume |
| E0402 | The robot is tilted and cannot start | Put the robot on a flat, open surface to start |
| E0403 | Motion sensor (IMU) fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0501 | A drive wheel is blocked | Turn off the main switch and clean the drive wheels |
| E0502 | Drive wheel motor fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0503 | Drive wheel motor fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0504 | Drive wheel motor blocked, or dense tall grass made it overheat | Check the drive and Omni wheels, oil them if stiff, and cut dense grass below 6 cm (2.3 in) first |
| E0601 | The charging voltage is wrong | Check the adapter is plugged in, clean the charging contacts on the robot and station, check the adapter for damage, then restart and redock |
| E0602 | Battery fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0603 | The battery is too hot or too cold, so the task ends | Use the robot when the air is 0 to 50 °C (32 to 122 °F) |
| E0604 | Battery fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0701 | Poor contact while charging | Check the adapter is plugged in, clean the charging contacts on the robot and station, check the adapter for damage, then restart and redock |
| E0801 | Vision sensor fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0802 | Vision sensor fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E0803 | The vision sensor or the base station marker is dirty or blocked | Clean the sensor and the station marker, check the marker for damage and clear weeds around the station |
| E0807 | The robot slips or gets stuck near the base station | Remove obstacles around the station and make sure the ground there is level |
| E0809 | The vision sensor is dirty or blocked | Clean the vision sensor with a soft cloth, then resume |
| E0902 | A large drop is close to the robot | Put the robot on a flat, open surface to start |
| E0903 | The robot is stuck | Remove obstacles, put the robot on a flat, open surface and resume |
| E0904 | The robot cannot reach the area it was sent to | Remove obstacles along the path, then continue |
| E0905 | The robot cannot get back to the base station | Clear the path to the station, level the ground around it, then put the robot on the station by hand |
| E0906 | Obstacles near the base station stop it docking | Clear the path to the station, level the ground around it, then put the robot on the station by hand |
| E0908 | Mapping must start with the robot on the base station | Put the robot on the base station and make sure the adapter has power |
| E0909 | The robot could not plan a route | Clear obstacles, check no-go zones do not block the way, start on the lawn and set a grass-cutting zone over sparse grass |
| E0910 | No power at the base station, or a weak charging connection | Check the adapter is plugged in, clean the charging contacts on the robot and station, check the adapter for damage, then restart and redock |
| E0911 | The robot cannot drive off the base station | Clear obstacles, put the robot back on the station and start again |
| E0912 | The saved map does not match where the robot is | If the area is not mapped, mow it in Spot Mode. If it is mapped, delete the map and create it again |
| E0913 | The robot cannot leave the station because the grass nearby is sparse | Set a Multi-zone pathway into dense grass, or set a Grass cutting zone over the sparse grass |
| E0914 | The robot is outside its mapped work area | Use Multi-zone pathway in the app to link this lawn to a mapped area |
| E1400 | The bumper sensor stays triggered | Move the robot to open lawn and clean dirt from the bumper |
| E1404 | The robot is in factory mode and cannot be used | Hold the Start and Power buttons for 5 seconds |
| E1406 | Too hot to keep working | Put the robot on the base station and use it when the air is 0 to 50 °C (32 to 122 °F) |
| E1408 | The base station is too far from the lawn or does not face it | Keep 0.5 m clear at the sides and 1.8 m in front, place it within 3 m of the lawn facing it, or set a path in the app |
| E1409 | The robot was moved outside its usual area | Check it was not stolen, return it to its work area, or turn off Anti-theft protection in the app |
| E1410 | GPS module fault | Turn off the main switch, wait 10 seconds, turn it back on. If it persists, contact support |
| E1411 | Hardware fault detected | No fix in the manual. Contact TerraMow support |
| E1413 | Wi-Fi error | No fix in the manual. Contact TerraMow support |
| E1414 | STOP button blocked | No fix in the manual. Contact TerraMow support |
Meanings and fixes from the error code tables in TerraMow's V Series user manual (V1000 and V600, version 20250509) and TerraMow's online Troubleshooting Code Reference, checked November 12, 2026. The manual also lists N codes, which are notices such as low battery or a failed firmware update. For a few codes the online reference words the meaning a little differently, and this page notes where.
What to do next
If it keeps coming back, contact TerraMow support first, especially under warranty. Out of warranty, compare the repair quote with a new robot.
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How TerraMow error codes work
TerraMow's manual lists two kinds of codes. E codes are faults that stop the mower. N codes are notices, such as a low battery, a failed firmware update or too little light to mow. This page covers the E codes.
The first two digits after the E name the part. E00 is the blade disc, E01 the cutting height module, E02 lifting, E03 the safety key, E04 tilting and the motion sensor, E05 the drive wheels, E06 the battery, E07 charging, E08 the vision sensor, E09 getting stuck, docking and route planning, and E14 the bumper, heat, base station position, anti-theft and GPS.
The general fix sequence
TerraMow's fixes follow the same pattern for most codes. Work through it before you contact support.
- For anything under the mower, first turn off the main power switch on the underside of the robot.
- Clear the physical cause: debris in the blade disc or wheels, obstacles, or a blocked base station.
- Clean the part named in the code: vision sensor, station marker, bumper or charging contacts.
- For hardware faults, turn off the main switch, wait 10 seconds and turn it back on.
- If the code comes back, email [email protected] with the code.
Codes with no home fix
The V Series manual gives no fix for E1411 (hardware fault), E1413 (Wi-Fi error) or E1414 (STOP button blocked). Contact TerraMow support for these. TerraMow covers the mower, base station, adapter and battery pack with a 2 year limited warranty, and asks for the ICCID number and proof of purchase for a claim.
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Questions people ask
How do I reset a TerraMow error?
For most hardware codes, TerraMow says to turn off the main power switch on the underside of the robot, wait 10 seconds and turn it back on. For codes like E0201 or E0903, fix the cause, put the mower on flat, open ground and resume.
What does TerraMow E0903 mean?
The robot is stuck. Remove the obstacles around it, put it on a flat, open surface and resume. If it keeps getting stuck in one place, set a no-go zone there.
How do I contact TerraMow support?
Email [email protected] or send feedback from the TerraMow app. TerraMow says it replies within 24 hours and asks you to note any error code shown.