ERR 2
Cuisinart Over-Temperature or Shorted Temperature Sensor

Display shows “ERR 2” and the unit shuts down shortly after starting.

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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

Shorted thermistor, Heater stuck on due to relay failure, Severe scale causing localized overheating, Faulty control board temperature circuit

How to Fix / Troubleshooting

Safety first: Immediately unplug the coffee maker. Overheating can be a fire hazard.

  • Allow full cool-down: Let the unit cool for at least 30–60 minutes before touching any surfaces.
  • Check for burning smell or discoloration: Inspect the underside and sides of the unit for scorch marks or melted plastic. If present, do not use the machine again.
  • Descale if no visible damage: If there are no signs of burning, perform a full descale with a 1:1 vinegar-water solution to remove scale that may be causing hot spots.
  • Test carefully: After descaling and rinsing, plug in and run a short brew cycle with water only while monitoring for abnormal smells or noises.
  • Persistent ERR 2: If the error returns, the thermistor or control board is likely defective. Do not attempt to bypass safety devices. Seek professional repair or replacement.
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Repair Difficulty

Professional Required 5/5

Required Part

Heater Plate Thermistor
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