Samsung · Range / Oven error code

C-20 / C-21 / C-22Oven temperature sensor fault / over-temperature

Cross-checked High-voltage / caution

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Related diagnostic guides

Component test · Range / Oven

How to test an oven RTD temperature sensor

Most electronic ovens use a platinum RTD probe, which works the opposite way to an NTC: resistance rises with heat. Many common sensors read about 1,080 Ω at room temperature and climb roughly 2 Ω per °F.

6 steps ~20 mineasy

Guide · Range / Oven

Electric oven not heating (bake or broil)

Most no-heat calls on electric ovens come down to a burned-out bake or broil element, a failed oven temperature sensor, or loss of one 120 V leg of the 240 V supply. Test elements and sensor with power off before suspecting the control board.

7 steps ~45 minmoderate

Guide · Range / Oven

Oven temperature inaccurate (runs hot or cold)

First measure properly: ovens cycle above and below setpoint, so use an average over several cycles. Small offsets are fixed with the control's calibration setting; large errors usually mean a drifting sensor, a weak element or igniter, or a door gasket leak.

5 steps ~60 mineasy

More Samsung range / oven codes

Samsung · Range / Oven

-dC- / -dE-

Divider (partition) not detected correctly

Cross-checked

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C-d0

Button held too long

Cross-checked

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C-d1

Door lock malfunction

Cross-checked High-voltage / caution

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C-F0

Main board to sub board communication fault

Cross-checked High-voltage / caution

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C-F2

Touch IC communication fault

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SE (or 5E)

Shorted / stuck key

Cross-checked High-voltage / caution