Error code · Wall Oven

Dacor Steam Oven Code C-70: Steam Sensor Reading

Medium · inspection needed

Code: C-70
Appliance: Wall Oven
Brand: Dacor
Warranty: 30-day workmanship

What C-70 means

Current Dacor steam wall ovens in the DOB30x977 and DOC30x977 families, the DOB30P977D among them, show C-70 when the steam sensor is open or shorted while the oven is operating. The control relies on that sensor for the steam side of cooking, and without a usable signal it displays the code and cannot carry on with steam. You will see C-70 on the screen.

Common causes of C-70

Wiring to the steam sensor that is broken or touching
A steam sensor that no longer reads
The board input that reads the steam sensor signal

✓ One safe check you can try

1. Press OFF, give the oven a moment, then begin a cooking mode once more. 2. When C-70 comes back, cut the power to the oven at its breaker, leave it for 30 seconds or longer, and restore it. 3. Keep the door closed while the oven is off. 4. If the code still will not clear, give us a call.

! Why to stop there

Open and shorted readings call for different tests, so we measure the steam sensor circuit before any part is replaced.
Steam cooking and plain heat use different parts, and we check what still works before we quote.
Nothing is started until you have approved a price in writing.

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.

→Same appliance

Other Wall Oven codes

C-F0Dacor Wall Oven Code C-F0: Main and Sub Boards Disconnected C-F2Dacor Wall Oven Code C-F2: Touch Control Link Lost CLOSE OVEN DOORDacor Discovery Wall Oven Message "CLOSE OVEN DOOR": Door Ajar F0Dacor Older Wall Oven Code F0: Stuck Touch Pad F1Dacor Older Wall Oven Code F1: Bake/Broil System Alarm 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

C-70C-70 questions

What is C-70 on my Dacor steam oven?

The steam sensor is reporting an open or shorted circuit during use. With no good reading to work from, the control puts C-70 on the screen and steam cooking cannot continue.

Do I need to stop using the oven with C-70 showing?

Yes, until it has been checked. Try the restart steps from the owner's manual once. If C-70 comes back, do not keep starting steam cycles, and call us to look at it.

Will a new sensor fix C-70?

Possibly, but the wiring or the board input can cause the same code. We test the circuit first, so you pay only for the part that really needs replacing.

Book a visit

Still seeing C-70?

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

(713) 231-9708