ROOMBA·FAULT ERR 16 WARN

Roomba Error 16 — Tilted at start

Q: Roomba Error 16 — Tilted at start

Error 16 means the robot was tilted or moved while starting, or the bumper is dislodged. Set it on flat ground, keep your hands off during startup, and check the bumper sits square and springs back.

Severity: Warning — job won't start until the robot sits flat eijs

Last verified: 2026-07-05 Tools: none Time: ~5 min Difficulty: easy

DIRECT ANSWER

Error 16 means the robot was tilted or moved while starting, or the bumper is dislodged. Set it on flat ground, keep your hands off during startup, and check the bumper sits square and springs back.

#meaning · #causes · #fix · #models — link straight to any section

COMMON CAUSES · RANKED

Started on an uneven spot MOST COMMON

Pressing CLEAN with the robot half on a rug or leaning on an obstacle trips the tilt check.

Robot nudged during startup

Picking it up or shoving it right after pressing CLEAN confuses the gyro.

Dislodged bumper UNCOMMON

A bumper knocked off its mounts reads as a permanent tilt or impact.

HOW TO FIX IT

No battery or electrical work involved in this fix.

Move to flat floor

Set the robot on hard, level ground and press CLEAN without touching it afterwards.

Check the bumper

Press it in around its full length — it should spring back evenly. Reseat it if the gaps look uneven.

Reboot on a flat surface

If the error fires on level floor, hold CLEAN until the robot reboots, then try again.

Did this fix your robot?

No reports yet for this fix — be the first.

MODELS AFFECTED

Model	Status	Firmware	Parts	Verified
Roomba e5 / e6	limited	e	Parts →	2026-07-05 · Source
Roomba i1 / i1+	limited	i	Parts →	2026-07-05 · Source
Roomba i3 / i3+	limited	i	Parts →	2026-07-05 · Source
Roomba i4 / i4+	limited	i	Parts →	2026-07-05 · Source
Roomba i6 / i6+	limited	i	Parts →	2026-07-05 · Source
Roomba i7 / i7+	limited	i	Parts →	2026-07-05 · Source
Roomba i8 / i8+	limited	i	Parts →	2026-07-05 · Source
Roomba j7 / j7+	limited	j	Parts →	2026-07-05 · Source
Roomba j9 / j9+	active	j	Parts →	2026-07-05 · Source
Roomba s9 / s9+	limited	s	Parts →	2026-07-05 · Source
Roomba Combo j7+	limited	j	Parts →	2026-07-05 · Source
Roomba Combo j9+	active	j	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.