Code: C-d1🔧 Samsung Microwave

Samsung Microwave C-d1 Error Code: Door or Key Error

Reviewed 2026-10-25 · Based on 5 manufacturer & service sources

What the code means

Samsung Canada's microwave error code table lists "C-d0, C-d1, C-d2" as "Door or Key Error", and Samsung US and Samsung France group the same three codes the same way (Samsung France: "Erreur de porte ou de touche", check the door switches and test the keypad). Samsung doesn't publish a separate microwave definition for each of the three. The first of them, C-d0, is the stuck or held touch key (the same fault as SE or 5E on other models; see our Samsung SE page). On Samsung built-in and freestanding ovens, C-d1 means "Door lock malfunctions", but microwaves don't have a motorised door lock, so on a microwave read C-d1 as a door or key-input fault rather than a lock fault. Samsung's routine for any microwave error is the same: unplug the microwave or turn it off at the circuit breaker; if the electronics got wet from a spill or steam from the cooktop, give it time to dry, otherwise wait 60 seconds; then power it back on and request service if the code returns. When a US owner reported C-d1 on a two-week-old over-the-range microwave that a power cycle, cleaning the latch area and toggling the control lock didn't clear, Samsung's support moderator replied that C-d1 indicates the microwave will need service. The parts involved (door interlock switches, the door latch and the keypad or control board) sit behind panels near the high-voltage circuit, so testing them is a job for a technician.

Likely causes

Safe DIY checks

⚠ Before you start

Unplug the appliance or switch off its breaker before opening panels.

  1. Open and close the door firmly and check that nothing (a utensil, food, a towel) is stopping it from closing all the way.
  2. Look at the latch hooks on the door and the slots they go into. If something is stuck in them, unplug the microwave first, then clean it out gently. Don't push anything into the slots.
  3. Unplug the microwave, or switch it off at the circuit breaker for an over-the-range model, and leave it off for at least 60 seconds before restoring power.
  4. If liquid or steam may have reached the control panel, wipe it dry and leave the microwave off for a couple of hours (longer is fine) so the electronics dry out. Use the hood fan when cooking on the range below.
  5. Make sure the control lock (child lock) isn't on, and that nothing is pressing on the keypad.
  6. If C-d1 still comes back, stop there and request service from Samsung. Don't remove the outer cabinet: a microwave's high-voltage capacitor can hold a dangerous charge even when it's unplugged.

🛠 When to call a pro

  • C-d1 returns after a 60-second power reset and a drying period: Samsung's guidance is to request service.
  • The door is visibly damaged, sagging, or won't latch, or you see sparking or arcing near the door: stop using the microwave, since the door switches are part of its safety interlock.
  • The microwave runs with the door open or makes a loud buzz or bang when the door is opened or closed: unplug it and don't use it until it's been checked.
  • The microwave is under warranty: Samsung has told owners that C-d1 is a service repair, so contact Samsung rather than opening it up.

Parts that commonly fix it

Always match the part number to your exact model.

⚙

Samsung microwave door interlock switch kit

Match it to your exact model number; replacing interlock switches should be done by a qualified technician.

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⚙

Samsung microwave touch keypad / control panel assembly

Only if a technician confirms the keypad is the fault; it's model-specific.

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Sources

  1. Samsung Canada: Understanding the meaning of error codes on your Samsung microwave (C-d0, C-d1, C-d2 Door or Key Error; reset by unplugging or switching off the breaker for 60 seconds)
  2. Samsung US: What does the error code on my Samsung microwave mean? (door or key error group; unplug, let moisture dry or wait 60 seconds, request service if it returns)
  3. Samsung France: Codes d'information et d'erreur sur mon micro-ondes (C-d0, C-d1, C-d2 door or key error; check the door switches and test the keypad)
  4. Samsung UK: Check out the information codes on my oven (on Samsung ovens, C-d1 is door lock malfunction; for comparison only)
  5. Samsung US Community: Microwave 2 weeks old and not working (C-d1 not cleared by power cycle, cleaning the latch or control lock; Samsung moderator says C-d1 indicates the microwave needs service)

Last reviewed 2026-10-25. Always confirm against the manual for your exact model number.