Bosch Microwave Error Code Er11 — Jammed Buttons
What this means
Error Er11 indicates the control board has detected a stuck or continuously pressed button. This is typically caused by food splatter, grease, or moisture buildup around the buttons. In some cases, the button mechanism itself may be physically jammed.
Step-by-step fix
4 stepsPress all buttons
Press each button on the control panel firmly several times to free any that may be stuck.
Clean the panel
Wipe the entire control panel with a dry cloth. For stubborn grease, use a very lightly damp cloth.
Do not use dripping wet cloths or spray cleaners directly on the panel.
Open and close the door
Opening and closing the door can sometimes help reset the control panel state.
Power cycle
Unplug for 5 minutes and plug back in to reset.
When to call a professional
If cleaning does not resolve the issue, the membrane keypad may need professional replacement.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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No replacement parts typically needed for this fix.
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