What C-20 Means
C-20 on a Dacor range is the oven temperature sensor reading open or shorted while the oven is on. Dual-fuel, gas and induction DOP ranges all use it. On a 48-inch range, the technician identifies which cavity’s sensor is involved.
Common Causes of C-20
- Oven sensor failed from heat cycling
- Sensor wiring damaged behind the oven back panel
- Main board sensor input
🔧 One Safe Check You Can Try
Turn the knobs to Off and restart the oven. If C-20 remains, do the 30-second breaker reset. With the oven cold, you can look at the sensor rod in the upper rear corner for obvious damage.
⚠ Why You Shouldn't Go Further Than That
- The sensor connector is reached from the back of the range, which means sliding a heavy range out and, on gas models, managing the gas line.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.