error-42 Troubleshooting

Error 42 — maintenance brush jammed on the Xiaomi Robot Vacuum S12

Source: Xiaomi support — smart home troubleshooting Confidence: 85% Verified Aug 9, 2026

The maintenance brush is jammed and needs to be cleared.

How to fix Error 42 — maintenance brush jammed

Clear the maintenance brush

Remove the maintenance brush, clear any hair or debris, and reinstall it.

Source: Xiaomi support — smart home troubleshooting Confidence: 85% Verified Aug 9, 2026
Difficulty: ★ Est. 5 min

Parts needed: Xiaomi S10 Main Brush Roller, Xiaomi S8 Main Brush Roller, Xiaomi S7 Main Brush Roller, Xiaomi S6 Main Brush Roller, Xiaomi S5 Main Brush Roller, Xiaomi X10 Main Brush Roller, Xiaomi X20 Main Brush Roller, Xiaomi X20+ Main Brush Roller, Xiaomi P10 Main Brush Roller, Xiaomi P20 Main Brush Roller, Xiaomi Robot Vacuum S12 Cleaning tool, Xiaomi S12 Main Brush Roller

Replace the brush

If the brush is worn, replace it with a genuine one.

Source: Xiaomi support — smart home troubleshooting Confidence: 85% Verified Aug 9, 2026
Difficulty: ★ Est. 5 min

Parts needed: Xiaomi S10 Main Brush Roller, Xiaomi S8 Main Brush Roller, Xiaomi S7 Main Brush Roller, Xiaomi S6 Main Brush Roller, Xiaomi S5 Main Brush Roller, Xiaomi X10 Main Brush Roller, Xiaomi X20 Main Brush Roller, Xiaomi X20+ Main Brush Roller, Xiaomi P10 Main Brush Roller, Xiaomi P20 Main Brush Roller, Xiaomi Robot Vacuum S12 Cleaning tool, Xiaomi S12 Main Brush Roller

Replacement parts for the Xiaomi Robot Vacuum S12

Xiaomi Robot Vacuum S12 Dock base pad Xiaomi Robot Vacuum S10 Filter Xiaomi Robot Vacuum S10 Left side brush Xiaomi Robot Vacuum S10 Right side brush Xiaomi Robot Vacuum S10 Side brush set Xiaomi Robot Vacuum S10 Mop pad (4-pack) Xiaomi Robot Vacuum S8 Filter Xiaomi Robot Vacuum S8 Left side brush Xiaomi Robot Vacuum S8 Right side brush Xiaomi S12 HEPA Filter Xiaomi S12 Dust Bag Xiaomi S12 Dock Filter Xiaomi S10 Replacement Battery Xiaomi S10 Main Brush Roller Xiaomi S10 Mop Pad Xiaomi S8 Main Brush Roller Xiaomi Robot Vacuum S8 Side brush set Xiaomi Robot Vacuum S8 Mop pad (4-pack) Xiaomi Robot Vacuum S7 Filter Xiaomi Robot Vacuum S7 Left side brush Xiaomi Robot Vacuum S7 Right side brush Xiaomi Robot Vacuum S7 Side brush set Xiaomi Robot Vacuum S7 Mop pad (4-pack) Xiaomi Robot Vacuum S6 Filter Xiaomi Robot Vacuum S6 Left side brush Xiaomi Robot Vacuum S6 Right side brush Xiaomi Robot Vacuum S6 Side brush set Xiaomi S7 Main Brush Roller Xiaomi S7 Mop Pad Xiaomi S6 Main Brush Roller Xiaomi Robot Vacuum S5 Filter Xiaomi Robot Vacuum S5 Left side brush Xiaomi Robot Vacuum S5 Right side brush Xiaomi Robot Vacuum S5 Side brush set Xiaomi S5 Main Brush Roller Xiaomi Robot Vacuum X10 Filter Xiaomi Robot Vacuum X10 Left side brush Xiaomi Robot Vacuum X10 Right side brush Xiaomi Robot Vacuum X10 Side brush set Xiaomi Robot Vacuum X10 Mop pad (4-pack) Xiaomi X10 Replacement Battery Xiaomi X10 Main Brush Roller Xiaomi X10 Mop Pad Xiaomi Robot Vacuum X20 Filter Xiaomi Robot Vacuum X20 Left side brush Xiaomi Robot Vacuum X20 Right side brush Xiaomi Robot Vacuum X20 Side brush set Xiaomi Robot Vacuum X20 Mop pad (4-pack) Xiaomi Robot Vacuum X20+ Filter Xiaomi Robot Vacuum X20+ Left side brush Xiaomi Robot Vacuum X20+ Right side brush Xiaomi Robot Vacuum X20+ Side brush set Xiaomi X20 Replacement Battery Xiaomi X20 Main Brush Roller Xiaomi X20 Mop Pad Xiaomi X20+ Main Brush Roller Xiaomi Robot Vacuum X20+ Mop pad (4-pack) Xiaomi Robot Vacuum P10 Filter Xiaomi Robot Vacuum P10 Left side brush Xiaomi Robot Vacuum P10 Right side brush Xiaomi Robot Vacuum P10 Side brush set Xiaomi Robot Vacuum P10 Mop pad (4-pack) Xiaomi Robot Vacuum P20 Filter Xiaomi Robot Vacuum P20 Left side brush Xiaomi Robot Vacuum P20 Right side brush Xiaomi Robot Vacuum P20 Side brush set Xiaomi X20+ Mop Pad Xiaomi P10 Main Brush Roller Xiaomi P10 Mop Pad Xiaomi P20 Main Brush Roller Xiaomi Robot Vacuum P20 Mop pad (4-pack) Xiaomi Robot Vacuum S12 Filter Xiaomi Robot Vacuum S12 Left side brush Xiaomi Robot Vacuum S12 Right side brush Xiaomi S12 Mop Pad Xiaomi Robot Vacuum S12 Brush guard Xiaomi Robot Vacuum S12 Side brush set Xiaomi Robot Vacuum S12 Cable organizer Xiaomi Robot Vacuum S12 Cleaning tool Xiaomi Robot Vacuum S12 Charging cable Xiaomi Robot Vacuum S12 Remote control Xiaomi S12 Water Tank Filter Xiaomi Robot Vacuum S12 Mop pad (4-pack) Xiaomi S12 Floor Cleaning Solution Xiaomi S12 Main Brush Roller Xiaomi S12 Replacement Battery Xiaomi S12 Side Brush Xiaomi S8 Mop Pad Xiaomi P20 Mop Pad Xiaomi X20+ Replacement Battery

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