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ROBOROCK·FAULT ERR 15 WARN

Roborock Error 15 — Wall sensor dirty

Severity: Warning — robot pauses; it can't judge wall distance through the dust S6S7
Last verified: 2026-07-05 Tools: soft dry cloth Time: ~2 min Difficulty: easy

DIRECT ANSWER

Error 15 means the wall sensor is blocked by dust. That's the small sensor on the robot's right side that keeps it a steady distance from walls while edge-cleaning. One wipe usually fixes it.
#meaning · #causes · #fix · #models — link straight to any section

COMMON CAUSES · RANKED

1

Dust film on the sensor window MOST COMMON

Edge cleaning drags the sensor along the dustiest strip of the room, so it fogs up faster than any other sensor.

2

Smudge from a wet or waxed surface UNCOMMON

Mopping residue or polish splashed on the sensor window scatters the infrared beam.

HOW TO FIX IT

No battery or electrical work involved in this fix.

Find the wall sensor

It's the small window on the right-hand side of the robot body.

Wipe it clean

Use a soft dry cloth. No cleaners, no water — just wipe until the window is clear.

Restart the clean

If the error returns with a clean sensor, note it alongside erratic wall-following and contact support.

RELATED FIRMWARE

S7 series (S7, S7 MaxV)

SAMPLE DATA — dataset in progress
4.1.2_07984.1.5_11964.3.5_16124.5.3_5936

Firmware timelines are rebuilt monthly from release notes. Versions marked as sample data are community-reported and not yet verified. Full firmware timeline →

MODELS AFFECTED

Model Status Firmware Parts Verified
Roborock S6 limited s6 Parts → 2026-07-05 · Source
Roborock S7 active s7 Parts → 2026-07-05 · Source

Models resolved from the series chips above. Support status comes from our EOL library; rows link to the matching parts and firmware pages.

Sources

Verification

OFFICIAL SOURCE

Last verified: 2026-07-05 · How we verify a fault code

Corrections

Spotted an error? Report a correction — fixes ship within 48h and are logged on this page.