Dacor Oven Error Code L33

L33 indicates that the lower oven temperature sensor probe 2 has registered a shorted condition. The relay board's analog-to-digital converter detected a value of 0x0010 or lower held for 60 continuous seconds, which signals that the probe circuit has collapsed to near-zero resistance. This is typically caused by a failed probe, damaged wiring, or a faulty connector at the relay board.

You should not use the oven while the L33 code is active. A shorted temperature sensor means the control cannot accurately read the lower oven temperature, which creates a risk of uncontrolled overheating. Stop using the oven until the probe and wiring have been inspected and the fault is resolved.

If only the temperature probe needs replacement, parts and labor typically run in the range of $100 to $250 depending on your location and service provider. If the relay board is at fault, repair costs can range from $200 to $500 or more. Getting a diagnosis from a qualified technician before ordering parts is recommended to avoid unnecessary expense.

A knowledgeable DIYer can begin by checking the probe connector at the relay board for corrosion or loose seating, which requires no parts and costs nothing. If the connector looks good, testing the probe resistance with a multimeter is straightforward. Replacing the probe or harness is a moderate repair, but if the relay board itself is at fault, that repair is more complex and may warrant professional service.

A power reset may temporarily clear the display, but the L33 code will return if the underlying fault is still present. The fault requires 60 continuous seconds of the out-of-range A/D value to trigger, so the code will reappear as soon as the oven attempts to operate with the shorted probe still in the circuit.