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● Checked Nov 12, 2026From Dreame support

Dreame robot mower

Dreame robot mower "Boundary detection error occurs during Auto-Mapping": what it means and the fix

Steps5

ToolsNone

PartsNone

Works for Dreame A2 and A3 AWD series (A3 AWD 1000, A3 AWD Pro 2500 and 3500).

Short answer

What it means: During Auto-Mapping, the mower could not detect the lawn boundary with its camera.

Quick fix: Map when the light is neither too bright nor too dim.

Fix it in 5 steps

Map when the light is neither too bright nor too dim.
Map in clear weather, without fog or rain.
Make sure the front camera is clean and not blocked.
Even out bumps along the lawn edge.
If it keeps failing, switch to remote control mode and map the boundary by driving the mower.

Fixed when: Auto-Mapping finishes the boundary.

Still showing Boundary detection error occurs during Auto-Mapping?

Remote control mapping also fails. Contact Dreame after-sales service through support.dreametech.com. Contact Dreame support. Dreame support →

Parts that fix this

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Why it happens

Light too bright or too dim
Fog or rain
Dirty or blocked front camera
Bumpy ground

Other Dreame robot mower errors

The robot is not connected to the app›Robot lifted›Robot tilted›Robot trapped›Wheel error›Blade disc can't rotate›The blade disc fails to move up or down›The blade disc cannot move to the side›Bumper error›Charging errorCharging error›Battery temperature too high›Battery temperature is high›Battery temperature is low›LiDAR is blocked›LiDAR malfunction›LiDAR is dirty›LiDAR temperature is high›LiDAR temperature is too high›Robot is lost›The robot is in the no-go zone›The robot is outside the map›Emergency stop is activated›Low battery›The robot is away from the map. Risk of being stolen›Failed to return to the charging station›Failed to dock in the charging station›Positioning failed›Insufficient space for turning in front of the station›Path obstructed›There is an issue with the front camera›Abnormal vibration›All 35 Dreame robot mower codes →

Keeps happening? Compare before you replace

Dreame A3 AWD 1000$1,400 · LiDAR AWD mower for quarter acre hilly yards, no RTK Check price on Amazon →

Dreame A3 AWD Pro 2500$1,700 · LiDAR and vision AWD mower, no RTK, for hilly 0.62 acre lawns Check price on Amazon →

Dreame A3 AWD 1000 vs Mammotion YUKA mini 2 1000HPoint by point

Sources

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Replacement blades for Dreame robot mowerPart on AmazonCheck price →