Error code · Wall Oven

Dacor Wall Oven Code C-23: Temperature Probe Shorted

Medium · inspection needed

Code: C-23
Appliance: Wall Oven
Brand: Dacor
Warranty: 30-day workmanship

What C-23 means

On the current Dacor Modernist, Contemporary and Transitional wall ovens, including the DOB30M977S, DOB30T977S and DOC30M977D, C-23 means the temperature probe sensor is shorted while the oven operates. The control sees a signal from the probe circuit that is not a valid reading, so it shows C-23 and stops relying on that sensor. You see the code on the display, and the oven may not start a cooking mode.

Common causes of C-23

A temperature probe sensor that has shorted
Probe wiring or a connector with damaged insulation
A control board input that is misreading the probe signal

✓ One safe check you can try

1. Press OFF and start the oven again. 2. If C-23 stays, switch the oven off at the breaker for at least 30 seconds. 3. Turn the breaker back on and check the display. 4. If the problem persists, call us for service.

! Why to stop there

A shorted reading can come from the sensor, its wire or the board, and the code does not tell us which.
We test the probe circuit in place before we replace any part.
You approve the written price first, and the repair carries a 30-day workmanship warranty.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Wall Oven codes

F2Dacor Older Wall Oven Code F2: Runaway Temperature Alarm F3Dacor Classic Wall Oven Code F3: Shorted Temperature Sensor F4Dacor Epicure, Millennia and Preference Oven Code F4: Open Sensor Circuit F6Dacor Epicure, Millennia and Preference Oven Code F6: Memory Checksum Error F7Dacor Classic Wall Oven Code F7: Self-Clean Door Lock Circuit F8Dacor Epicure, Millennia and Preference Oven Code F8: Door Latch Motor Alarm C-70Dacor Steam Oven Code C-70: Steam Sensor Reading INSERT MEAT PROBE / REMOVE MEAT PROBEDacor Discovery Wall Oven Message "INSERT MEAT PROBE / REMOVE MEAT PROBE": Probe Prompt

C-23C-23 questions

What is C-23 on a Dacor wall oven?

It means the temperature probe sensor is shorted while the oven is running. The control cannot use that reading as a real temperature, so the oven shows C-23 on the display.

Does C-23 mean the probe is bad?

Not necessarily. A short can also be in the wiring or on the board. That is why we test the circuit instead of replacing the probe on a guess.

Will restarting the oven clear C-23?

It may clear a one-time glitch, and the owner's manual lists a restart. If C-23 returns after the breaker reset, the short is real and needs testing.

Book a visit

Still seeing C-23?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 231-9708