Dacor Range, Oven, Cooktop Error Code L33

L33 indicates a shorted RTD 2 sensor on the lower oven temperature circuit. The control board has detected an abnormally low resistance reading from the lower oven temperature sensor, which prevents accurate temperature regulation. The diagnostic process starts with inspecting all wiring connection points along the lower oven sensor circuit. If the wiring checks out, the sensor itself likely needs to be tested or replaced.

It is not advisable to operate the oven while L33 is active. A shorted temperature sensor means the control board cannot reliably monitor the lower oven temperature, which could result in uncontrolled overheating. Continuing to use the oven in this state poses a potential safety risk and may cause additional damage to internal components.

Repair costs vary depending on the root cause. If the lower oven temperature sensor has shorted internally and needs replacement, parts and labor typically run in the range of $150 to $350. If the fault is traced to damaged wiring or a connector issue, labor costs may be lower since no major parts are needed. Control board replacement, if required, can raise the total cost significantly higher.

Homeowners comfortable with basic appliance diagnostics can start by unplugging the oven and inspecting the sensor wiring and connectors for obvious damage. However, accurately diagnosing a shorted RTD requires a multimeter to measure resistance across the sensor terminals, and replacing components inside the oven cavity involves working around high-voltage parts. If you are not experienced with appliance electrical work, calling a qualified technician is the safer choice.

Disconnecting power to the oven and restoring it may temporarily clear the L33 code, but the fault will return if the underlying problem has not been resolved. A short in the RTD 2 sensor circuit is a hardware issue that requires physical inspection and repair. Resetting is useful for confirming whether the fault is intermittent, but it is not a permanent fix.