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ROOMBA·FAULT ERR 9 WARN

Roomba Error 9 — Bumper stuck

Severity: Warning — robot won't drive while it thinks it's pressed against a wall 600eijs
Last verified: 2026-07-05 Tools: none Time: ~5 min Difficulty: easy

DIRECT ANSWER

Error 9 means the bumper is stuck or its sensor reads as permanently pressed. Usually grit trapped behind the bumper; sometimes the bumper got knocked out of place. Tap it around the edge, then press CLEAN.
#meaning · #causes · #fix · #models — link straight to any section

COMMON CAUSES · RANKED

1

Debris trapped behind the bumper MOST COMMON

Grit in the gap stops the bumper from springing back after contact.

2

Dislodged bumper UNCOMMON

A hard knock or a drop can pop the bumper off its mounts so it hangs pressed.

3

Failed bumper switch RARE

If the error survives cleaning and realignment, the internal sensor has failed.

HOW TO FIX IT

No battery or electrical work involved in this fix.

Tap the bumper briskly

Tap several times across the front and sides to shake debris out of the gap, then press CLEAN.

Work the bumper in and out

Press it in along its full length. It should move and spring back evenly everywhere.

Check the alignment

Look for uneven gaps between bumper and body. A dislodged bumper needs to be clipped back onto its mounts.

Reboot the robot

Hold CLEAN until the robot reboots. If error 9 returns right away, the bumper sensor needs service.

MODELS AFFECTED

Model Status Firmware Parts Verified
Roomba 614 limited 600 Parts → 2026-07-05 · Source
Roomba 675 limited 600 Parts → 2026-07-05 · Source
Roomba 690 limited 600 Parts → 2026-07-05 · Source
Roomba 694 limited 600 Parts → 2026-07-05 · Source
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

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