Samsung Oven/Range Error Code C-d0 — Door Latch Switch Circuit Fault
What this means
The C-d0 error code indicates a fault in the oven door latch switch circuit. The control board is not receiving the expected open/closed signal from the door latch microswitch. This can prevent the oven from starting a self-clean cycle or may keep the door locked after one. Causes include a failed door latch switch, a misaligned latch, or broken wiring between the switch and control board.
Alternate codes: Cd0, C-D0
Step-by-step fix
4 stepsPower cycle and test
Turn off the breaker for five minutes. Restore power. Open and close the oven door firmly several times. Try starting a bake cycle (not self-clean) to see if the error clears.
Sometimes the latch switch sticks in a partially engaged position. Cycling the door a few times can free it.
Inspect the door latch alignment
Open the oven door and look at the latch mechanism on the top of the oven frame. The latch arm should move freely left and right (or in and out depending on the model). Check that it is not bent, obstructed by debris, or misaligned with the latch receiver on the door frame.
Wipe the latch arm and receiver with a damp cloth — baked-on grease can impede smooth operation.
Test the door latch switch
Unplug the oven. Remove the top rear panel to access the door lock assembly. Locate the small microswitch(es) attached to the latch mechanism. Disconnect the switch wires and test for continuity — the switch should toggle between open and closed as you manually move the latch arm.
Most Samsung ovens have two switches on the lock assembly — one for lock detection and one for unlock detection. Test both.
Replace the latch switch or assembly
If a switch does not toggle properly, replace it. On many models, the switch and latch motor are sold as a single assembly. Remove the mounting screws, disconnect the harness, install the new unit, and test with a self-clean cycle.
Before ordering, check if the switch is available separately — it's much cheaper than the full lock assembly.
When to call a professional
If the switch and latch mechanism are working correctly but the error persists, the control board may have a faulty input circuit for the door switch. A technician can trace the fault and replace the board.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Door Lock / Latch Assembly
Part #DG66-00041B · $40–$80
If the latch switch fails the continuity test
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