Roborock robot vacuum announces “Error 2” / “Clean and tap the bumper” and stops cleaning.

Safety first: Power off the robot and remove it from the dock.

Step-by-step:

• Check bumper movement: Gently press the front bumper in and release. It should move freely and spring back evenly on both sides. If it feels stuck, continue with cleaning.
• Remove debris: Inspect the gap between the bumper and the main body. Use a flashlight to look for small toys, cables, or dirt. Remove any obstruction with tweezers or a soft brush.
• Clean bumper sensors: On many Roborock models, IR sensors are behind the bumper. Use compressed air or a soft brush to blow out dust from the bumper gap.
• Tap the bumper: With the robot powered on, gently tap the bumper several times across its width to help reset the internal switches/sensors, as recommended in the voice prompt.
• Restart cleaning: Power cycle the robot and start a short cleaning run in an open area to confirm the error is cleared.

If the bumper still sticks: The bumper spring or internal impact switch assembly may be damaged or misaligned. Disassembly of the front shell is required; if you are not comfortable opening the unit, contact a technician.