Dacor Oven Error Code L22

L22 indicates a lower oven over-temperature fault combined with a temperature amplifier failure affecting both probe 1 and probe 2. The oven's control system has detected that the signals from both lower oven temperature probes are outside acceptable parameters. This is most often caused by loose probe cable connections or a failed temperature probe.

No, you should not attempt to operate the oven while L22 is active. The code indicates the oven's temperature monitoring system is not functioning correctly, which means the oven cannot reliably regulate its internal temperature. Continuing to use it could create a fire hazard or damage internal components.

Repair costs vary depending on what needs to be replaced. A temperature probe typically costs in the range of $30 to $80 for the part, while a control board replacement can range from $150 to $400 or more depending on the model. Adding professional labor, total repair costs can range from $100 to $600 or higher, which is why starting with the simpler cable and probe checks is recommended before assuming the control board is faulty.

The first diagnostic step is something many homeowners can handle: check that the probe cables are firmly connected at both the probe end and the control board end. If cables are secure and the error persists, replacing the temperature probe is the next step and is a manageable repair for someone comfortable with appliance work. If the error continues after a probe replacement, the control board may be involved and a qualified technician should be consulted.

A power reset, such as turning off the circuit breaker for 30 seconds, may temporarily clear the code, but it will return if the underlying cause is not fixed. The fault is tied to a hardware issue with the probe cables or the temperature probes themselves, and resetting alone does not address those problems. A proper repair is needed to prevent the code from recurring.