Bosch Refrigerator Error Code EI

The EI code on a Bosch refrigerator indicates a problem with the I-sensor, or ice sensor, in the automatic ice maker. The main PCB has detected that the sensor circuit is either open (disconnected) or shorted. This fault will typically stop ice production until the sensor or wiring issue is corrected.

The EI error code is specific to the ice maker sensor circuit and does not indicate a problem with refrigeration or food safety. Your refrigerator and freezer compartments should continue cooling normally. However, the ice maker may be disabled or operating incorrectly, so you should not rely on it for ice production until the fault is resolved.

Resetting the refrigerator by cycling power may temporarily clear the EI code from the display, but the code will return if the underlying sensor fault is still present. The main PCB will re-detect the open or shorted I-sensor circuit on the next diagnostic cycle. A permanent fix requires repairing or replacing the faulty sensor or wiring.

Some causes of the EI code, such as a loose connector at CN11 on the main PCB, can be corrected without special tools by reseating the connector. However, confirming the fault requires measuring resistance across the I-sensor terminals with a multimeter after disconnecting CN11. If the sensor itself has failed, replacing it involves working inside the ice maker assembly, which is a moderate-difficulty repair that many experienced DIYers can handle.

Repair costs depend on what component needs to be replaced. If only a connector or wiring repair is needed, costs are minimal. If the I-sensor itself requires replacement, parts typically range from $30 to $80 depending on the model, plus labor costs of $100 to $200 if a technician performs the work. Diagnosing the fault first with a multimeter before ordering parts is recommended.