Frigidaire Refrigerator Error Code EI

The EI error code on a Frigidaire refrigerator indicates that the ice sensor in the automatic ice maker has either lost its electrical connection or has developed a short circuit. The Main PCB monitors the sensor through connector CN11, and when it detects an invalid resistance reading, it triggers the EI code. This fault directly affects the ice maker's sensing system and typically requires inspection of the sensor and its wiring.

The refrigerator's cooling and food storage functions are generally not compromised by the EI error since it is specific to the ice maker sensor circuit. However, the automatic ice maker may not operate correctly while this fault is active. It is safe to continue using the refrigerator for food storage, but the ice maker should not be relied upon until the fault is resolved.

A reset may temporarily clear the EI code from the display, but if the underlying fault in the ice sensor circuit remains, the code will return once the control board re-checks the sensor. Clearing the code without repairing the sensor or wiring is not a lasting solution. The proper fix requires confirming the sensor resistance at CN11 and replacing the faulty component.

Start by unplugging the refrigerator, then locate connector CN11 on the Main PCB and separate it. Use a multimeter to measure resistance across both terminals of the ice sensor. If the reading shows infinite resistance or near-zero resistance, the ice sensor or its wiring is faulty. Inspect the wiring harness for damage or corrosion first, and if the sensor itself is the cause, replace the ice sensor in the automatic ice maker assembly.

If only the ice sensor needs replacement, parts typically range from around $20 to $60 depending on the specific model. If a technician is needed to perform the diagnosis and repair, labor costs can add $80 to $150 or more to the total. In the less common scenario where the Main PCB is at fault, board replacement costs can range from $100 to $300 for parts alone.