The E42 error on your Frigidaire dryer means the control board has detected a problem with the door switch or door latch circuit, usually because the door isn’t sensed as fully closed during a cycle. Check the door latch and switch before assuming a control board fault.

Error code E42
Meaning Door switch/latch circuit fault or door open detected during operation
Severity Medium — the dryer won’t run until this is resolved
Time to fix 10–30 minutes
Tools needed Screwdriver, multimeter (optional)

What the E42 error means

Frigidaire dryers use a door switch to confirm the door is shut before the drum will turn and heat will run. The E42 code appears when the control board doesn’t get a consistent “closed” signal from this switch, either because the door was opened mid-cycle, the latch mechanism is worn, or the switch itself has failed. It’s a safety-related code, so the dryer won’t complete a cycle until it clears.

Common causes

  • Door opened during the cycle, even briefly
  • Worn, misaligned, or broken door latch/strike
  • Faulty door switch that no longer makes contact reliably
  • Loose or damaged wiring harness connector at the switch
  • Debris or lint buildup preventing the door from closing fully
  • Control board malfunction (less common)

How to fix the E42 error

  1. Power cycle the dryer: Unplug it or switch off the breaker for 5 minutes, then restart to see if the code clears.
  2. Inspect the door and latch: Open and close the door firmly, checking that the latch aligns properly and clicks into place without gaps.
  3. Clean the door area: Remove any lint, fabric, or debris around the door seal and latch that could stop it from closing fully.
  4. Test the door switch: With the dryer unplugged, access the switch (usually behind the front panel near the door) and use a multimeter to check continuity when pressed.
  5. Check the wiring harness: Look for loose, corroded, or disconnected wires at the door switch connector and reseat or repair as needed.
  6. Replace the door switch: If it fails the continuity test, swap in a manufacturer-approved replacement part.

FAQ

Can I still use the dryer if it shows E42?
No, the dryer will stop running until the door switch fault is cleared, since it’s a safety interlock issue.

Is the door switch expensive to replace?
Door switches are usually inexpensive, and replacement is a straightforward DIY job if you’re comfortable removing the front panel.

Does E42 mean the control board is broken?
Not usually. Most E42 errors trace back to the door latch or switch rather than the control board, so it’s worth ruling those out first.