Written by
Elena Navarro Appliance Repair Content SpecialistPublished September 11, 2026Updated October 20, 2026
Error codeC90
ApplianceWall Oven
Quick answer
C90 is a power loss notice: power was interrupted and restored, and any key press clears it.
Model compatibility: Dacor reuses codes across series and model years, so C90 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Power loss: power was interrupted and restored.
C90 POWER LOSS on a Dacor wall oven is a notice that the power was interrupted and then restored. It is not a fault in itself.
What to do
Press any key on the control panel. That clears the code and the oven runs normally. Cooking and cleaning remain available the whole time.
Ovens
Dacor 27-inch and 30-inch single and double wall ovens with touch-glass control; the manual does not name the series.
If it keeps coming back
Repeated C90 messages mean power keeps dropping out, so it is worth a call to service to talk it through.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Dacor appliance?
Book a specialist visit for a clear estimate and approval before any repair.
