Dacor Range Error Code F4

The F4 code on a Dacor range means the Electronic Range Control has detected an open circuit in the oven temperature sensor circuit during a cooking operation. It triggers after 16 consecutive failed temperature readings, confirming a persistent fault rather than a momentary glitch. As a result, all bake modes are disabled and the oven controls become non-responsive until the fault is corrected.

A power reset may temporarily clear the F4 code, but it will return as soon as the oven attempts a cooking operation and the ERC again detects the open sensor circuit across 16 consecutive readings. The underlying fault in the sensor or wiring must be repaired before the code will stay cleared.

If the oven temperature sensor is the cause, replacement sensor parts typically range from around 30 to 80 dollars depending on the specific model. If professional labor is needed, total repair costs including diagnostics and installation can range from roughly 100 to 250 dollars. ERC board replacement, if required, is a more expensive repair and can push costs considerably higher.

A knowledgeable DIYer can diagnose this code by testing the oven temperature sensor for continuity with a multimeter and inspecting the wiring harness for visible damage or loose connectors. If the sensor tests open (infinite resistance), replacing it is a straightforward repair. However, if the wiring requires repair inside the control area or the ERC board needs replacement, professional service is recommended.

When F4 is active, the range disables bake modes and renders the oven controls non-responsive, which prevents the oven from operating without temperature monitoring. Surface burners on a gas or dual-fuel model may still function, but you should not attempt to bypass or ignore the fault. Continued attempts to operate the oven without resolving the sensor fault are not recommended.