Whirlpool Dryer do — What It Means & How to Fix It

Also shown as dO on some models.

By Callum Griffin · Researched and verified against manufacturer and repair documentation · Reviewed September 2026

do on a Whirlpool compact dryer typically appears when the dryer is started with the door open or ajar — close and latch the door completely.

What this code means

Whirlpool says the do code typically occurs when the dryer is run with the door open (ajar). Verify the door is completely closed and latched. If the dryer still shows do, it will probably require a service call.

Whirlpool compact dryers.

Most likely causes

CauseHow likelyDIY-fixable?
Door ajar Very common Yes — no tools
Laundry trapped in the door Common Yes — no tools
Door switch fault Occasional No — technician job

What you can try yourself

  1. Open the door and clear the opening.
  2. Close the door until it latches.
  3. Start the cycle.
  4. Call for service if do remains with the door latched.

When to call a technician

Typical professional repair cost: Free when the door was ajar; about $100–$200 for a switch repair.

Frequently asked questions

What does do mean on a Whirlpool dryer?

The dryer was started with the door open or ajar.

The door is closed and it still says do?

Whirlpool says it will probably require a service call.

Is do a serious fault?

Usually not — it is a door-open warning.

Sources checked

Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.

Related Whirlpool codes

More: all Whirlpool dryer codes · all Whirlpool codes · search by symptom