Electrolux Cooktop Error Code 4

Error code 4 indicates that the LF (left front) zone control sensor or the On/Off key sensor on the touch control board has been detected as defective. The cooktop's control system monitors these capacitive sensors continuously and raises this code when the sensor response falls outside acceptable parameters. The fault is localized to the left side touch control board and its associated wiring.

Error code 4 affects the LF zone control and the On/Off key sensor, which means the cooktop may not respond correctly to touch inputs in that area. Continuing to use the unit with a known sensor fault is not recommended, as the cooktop may behave unpredictably. It is best to stop using the affected zones until the fault is resolved.

If the fault is only a loose or corroded connection, the repair cost is minimal, covering just labor time. If the left side Touch Control Board needs to be replaced, parts typically range from around $80 to $200 or more depending on the specific model, with additional labor costs if a technician performs the repair. Getting a diagnostic estimate before authorizing the work is advisable.

A knowledgeable DIYer can attempt the first diagnostic step, which is inspecting and reseating the cables and connectors to the left side touch control board. If that does not clear the fault, the repair requires replacing the left side Touch Control Board, which involves disassembling the cooktop. If you are not comfortable working with appliance electronics, it is best to contact a qualified technician.

A power reset by turning off the circuit breaker for one to two minutes may temporarily clear the display, but if the underlying hardware fault in the sensor or touch control board remains, the code will return. Error code 4 points to a component-level defect that requires physical inspection and likely a part replacement to resolve permanently.