iRobot Roomba i8+ — Error codes & fixes

Troubleshooting guide for the iRobot Roomba i8+. Diagnose an error code and find the fix.

Main brush error

error-4

The robot stops or reports the main brush is stuck. Hair or debris is likely wrapped around the roller.

Source: ProductDB robot-vacuum seed Confidence: 85% Verified Aug 8, 2026
2 fixes available

Error 11

error-11

Wheel error — the robot may be stuck. One of the wheels is blocked, preventing the robot from navigating.

Source: ProductDB robot-vacuum seed Confidence: 85% Verified Aug 8, 2026
1 fix available

Error 12

error-12

Robot cannot start or the wheel is stuck. The main brush or wheels may be jammed.

Source: ProductDB robot-vacuum seed Confidence: 85% Verified Aug 8, 2026
2 fixes available

Self-empty failed

error-20

The dock failed to empty the dustbin. The dust bag may be full or the dock suction blocked.

Source: ProductDB robot-vacuum seed Confidence: 85% Verified Aug 8, 2026
2 fixes available

Lidar / navigation error

error-22

The robot cannot build a map or is lost. The lidar tower may be blocked or dirty.

Source: ProductDB robot-vacuum seed Confidence: 85% Verified Aug 8, 2026
2 fixes available

Dust bag full

error-29

The dock dust bag is full and needs replacement.

Source: ProductDB robot-vacuum seed Confidence: 85% Verified Aug 8, 2026
1 fix available

Battery cannot charge

error-14

The robot does not charge on the dock. Charging contacts or the battery may be faulty.

Source: ProductDB robot-vacuum seed Confidence: 85% Verified Aug 8, 2026
2 fixes available

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