Electrolux Ice Maker Error Code OP

The OP code means the ice maker has detected an open circuit in the mold thermistor during diagnostic test 56C. The mold thermistor is the temperature sensor that monitors the ice tray, and an open condition means the control board is receiving no resistance signal from it. This prevents the ice maker from operating normally. The fault must be diagnosed at the 6-pin connector at the front of the ice maker compartment.

The ice maker will not produce ice while the OP fault is active, as the control board requires a working mold thermistor to safely manage the freeze and harvest cycles. There is no immediate safety hazard to the surrounding appliance or home from the error code itself. However, leaving the fault unresolved means the ice maker remains non-functional until the thermistor circuit is repaired.

Resetting the ice maker may temporarily clear the code, but the fault will return if the underlying cause has not been corrected. The OP code is triggered by an active open circuit in the mold thermistor, so until the thermistor, its wiring, or the connector is repaired, the control board will detect the same fault condition and reactivate the error. A reset is useful only after a confirmed repair to verify the code does not return.

A knowledgeable DIYer can begin by accessing the 6-pin connector at the front of the ice maker compartment and checking for a loose or disconnected connection. If the connector is secure, measuring resistance across pins 1 and 4 on the ice maker side with a multimeter will indicate whether the thermistor is the problem. Replacing the mold thermistor itself is a moderately involved repair that requires disassembling part of the ice maker, so comfort with appliance repair work is recommended before attempting it.

If the fix is simply reseating a loose 6-pin connector, there is no parts cost involved. If the mold thermistor itself needs replacement, parts typically range from $20 to $60 depending on the specific model. Adding professional labor, total repair costs generally fall in the range of $80 to $200. Wiring harness damage can push costs higher if a larger section of the harness needs replacement.