Electrolux Range Error Code LEDs 4,5

LEDs 4 and 5 on an Electrolux range signal an open circuit in the oven temperature probe loop. The electronic control board is unable to read a valid resistance from the probe, which should measure between 1050 and 1100 ohms at room temperature. This fault prevents the oven from operating safely because it cannot monitor cavity temperature. The probe itself, its wiring, or the control board is the source of the fault.

You should not use the oven while this fault is active. Because the control board cannot receive temperature feedback from the probe, it has no way to regulate or limit oven heat accurately. The stovetop surface burners are generally not affected by this fault, but the oven itself should remain off until the fault is resolved.

Resetting the range by cutting power at the breaker for a few minutes may temporarily clear the fault display, but the error will return as soon as the control board runs its diagnostic cycle and detects the open probe circuit again. A reset does not fix the underlying problem. The probe or wiring must be repaired or replaced to permanently clear this fault.

A knowledgeable DIYer can test the oven temperature probe using a multimeter set to ohms. If the probe reads outside 1050 to 1100 ohms at room temperature, replacing the probe is a straightforward repair that involves disconnecting the old probe and connecting the new one. If the probe tests good, tracing the wiring harness or replacing the control board requires more technical skill and comfort working with appliance electronics.

If only the temperature probe needs replacement, parts typically cost in the range of $20 to $60 depending on the model, and professional labor adds $75 to $150 in most markets. If the electronic control board is the culprit, board prices generally range from $100 to $300 or more, with similar labor costs on top. Getting the probe tested first is the most cost-effective approach before committing to a board replacement.