Bosch Refrigerator Error Code Er Ei

Er Ei on a Bosch refrigerator indicates a problem with the ice sensor circuit, either an open circuit (interruption) or a short-circuit. The control board cannot receive a valid signal from the ice maker's temperature sensor, so ice production is suspended. The fault typically points to a failed sensor thermistor, damaged wiring, or a loose connector.

The Er Ei error is not a safety hazard to your household. The refrigerator halts ice making as a protective response, and all other cooling functions should continue to operate normally. Leaving it unrepaired simply means you will not have ice production until the fault is resolved.

Repair costs vary depending on what component has failed. A replacement ice sensor thermistor is generally an affordable part, while labor charges from a service technician will add to the total. Overall repair costs can range from around $100 to $300 or more depending on your location, service rates, and whether additional components such as the wiring harness or control board also need attention.

A knowledgeable DIYer can check for and reseat loose connectors, inspect the wiring harness for obvious damage, and test the ice sensor with a multimeter. If the sensor reads an open or shorted circuit, replacing the thermistor is a straightforward repair. However, if the wiring or control board is involved, professional service is recommended.

A power reset may temporarily clear the error display, but the code will return if the underlying fault in the ice sensor circuit has not been corrected. The reset does not repair a failed sensor, broken wire, or damaged connector. Proper diagnosis and repair of the sensor circuit is required for the error to be permanently resolved.