Error 15 Moderate Easy DIY

Roborock Robot Vacuum Error 15 — Wall sensor dirty

Roborock Robot Vacuum · Error code Error 15

What Error 15 Means

The side wall-following IR sensor is dirty or blocked, preventing the robot from cleaning along walls.

Symptoms

  • Voice prompt 'Wall sensor is dirty'
  • App shows Error 15
  • Robot won't follow walls
  • Robot bumps walls hard repeatedly

Common Causes

1
Dust on wall sensor lens

Side-facing IR window collects dust.

2
Sticker or label covering sensor

Packaging residue on the side panel.

3
Sensor failure

Internal IR LED or receiver damaged.

How to Fix It

  1. Locate the wall sensor — a small IR window on the right-front side of the robot.
  2. Wipe it gently with a dry microfiber cloth.
  3. If smudged, use a slightly damp cloth and dry thoroughly.
  4. Remove any packaging stickers nearby.
  5. Restart cleaning.

More Roborock Robot Vacuum Codes

Error 1 Error 1 — LDS laser distance sensor blocked or stuck Error 10 Error 10 — Filter blocked Error 11 Error 11 — Magnetic strip / no-go interference Error 12 Error 12 — Battery low, returning to dock Error 13 Error 13 — Charging error / contacts dirty Error 14 Error 14 — Battery error

All Roborock codes → All robot vacuum codes →

Verified against manufacturer documentation: global.roborock.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.