Electrolux ELFW7637AT 4.3 cu ft Front Load Washer with SmartBoost and Steam Cleaning Technology E42 Error Fix: Door Lock Failure — Cannot Lock

Error code E42 on the Electrolux ELFW7637AT 4.3 cu ft Front Load Washer with SmartBoost and Steam Cleaning Technology means: Door Lock Failure — Cannot Lock. The door lock mechanism cannot lock the door after multiple attempts. The door lock assembly receives a signal to lock but does not achieve the locked position within the timeout period. Check the door lock wiring harness connector for loose or corroded connections. Test the door lock motor by applying power directly (use the tech sheet for the wiring diagram). The door lock assembly integrates a motor and multiple switches — if any component fails, replace the entire assembly.

The most successful fix is "Test and Replace the Door Lock Assembly" (hard difficulty, ~60 minutes). Estimated DIY cost: $20-$40. HomeMD has 2 community-ranked fixes for this error.

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Yes — the top-ranked community fix ("Test and Replace the Door Lock Assembly") is rated hard difficulty and takes about 60 minutes. Tools needed: Flathead screwdriver, Phillips screwdriver, Multimeter, Insulated test leads.

DIY cost: $20-$40. Professional repair typically costs $150-$220. Many homeowners save money by trying the top-ranked community fix first.

The Electrolux ELFW7637AT 4.3 cu ft Front Load Washer with SmartBoost and Steam Cleaning Technology has 8 other known error codes, including: E11 (Fill Timeout — No Water Supply), E13 (Water Leak in Tub — Leak Detected), E21 (Drain Timeout — Water Not Draining), E35 (Door Lock Error — Pressure Switch), E38 (Pressure Sensor Difference Error), and 3 more.

Error code E42 also appears on 1 other Electrolux model: ELFW7637AW 4.0 cu ft Front Load Washer with Steam and Sanitize Cycle. The fix may vary by model, so check each model's specific page for tailored repair steps.