ERROR 1
Keurig
Internal Temperature Sensor Error
Display shows “ERROR 1” and brewer will not operate.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Open or shorted thermistor, Loose thermistor connection, Control board ADC failure, Overheat event
How to Fix / Troubleshooting
Safety first: Unplug the brewer and allow it to cool completely.
- Power cycle: After cooling, plug in and see if the error clears.
- Check for overheating signs: If the unit was used heavily or vents were blocked, ensure it has adequate ventilation.
- Internal inspection (technician): Test the thermistor on the heater tank for proper resistance. Inspect wiring and connectors.
- Replace faulty parts: A failed thermistor or control board will need replacement by a professional.
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Repair Difficulty
Professional Required
5/5
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