Samsung Dryer Error dO

⚡ Quick Answer: The Samsung Dryer dO error indicates a door-related issue, typically caused by the door not being fully closed or a malfunctioning door switch. This e... ✅ DIY Fixable

What Does Error dO Mean?

The Samsung Dryer dO error indicates a door-related issue, typically caused by the door not being fully closed or a malfunctioning door switch. This error can prevent the dryer from starting or cause it to stop unexpectedly, even when the door appears shut. To resolve this, check that the door is securely latched and clean the door latch and switch area.

Common Symptoms:

  • Dryer won’t start
  • Code appears on display
  • Door closed but dryer still indicates door issue

Possible Causes

  • Door not fully closed or latched (medium)
  • Faulty door switch or door sensor circuit (medium)

How to Fix Error dO

DIY Fix Check and reseat the dryer door

  1. Open the dryer door fully and ensure no laundry or items are caught in the seal.
  2. Firmly close the door until you hear or feel it latch.
  3. Try restarting the dryer to see if the code clears.

DIY Fix Clean door latch and switch area

  1. Unplug the dryer or turn off power at wall/circuit breaker.
  2. Use a dry cloth or compressed air to remove lint/debris around the door latch and switch.
  3. Close the door and power on the dryer to check if the code clears.

Technician Only Test and replace the door switch

  1. Disconnect power to the dryer.
  2. Access the door switch by removing the console and/or front panel.
  3. Using a multimeter, test the door switch for continuity with the door closed.
  4. Replace the switch if there is no continuity when it should be closed.

Parts needed: Door switch assembly, Fasteners/panels

🛑 When to Call a Pro:
  • If the door switch replacement does not clear the error
  • If there is visible damage to the door frame, latch, or wiring harness
  • If the error persists despite correct door closure

Technical Specifications

wattage N/A
component Door Switch
resistance 0-1 ohms (when closed)
part_number DC93-00634A
voltage_rating 120V AC

Common Questions

What does dO error mean on Samsung Dryer?

The dO error indicates a door issue, often preventing the dryer from starting or causing it to stop unexpectedly.

Can I fix Samsung Dryer dO error myself?

Yes, you can check and reseat the door or clean the latch and switch area to try and resolve the error.

How much does it cost to fix dO error?

The estimated cost for parts to fix the dO error is between $20–$80, with additional labor costs.

When should I call a technician for dO?

Call a technician if the error persists after attempting to fix it, or if there’s visible damage to the door or wiring.

Sources & References

Data last verified: 2026-01-10

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