How to Fix Maytag Dishwasher Error E4

Problem: Communication problem between water level sensor and main computer

How to Fix Dishwasher Error

  1. Turn off power at the circuit breaker.
  2. Remove the lower access panel and control panel.
  3. Inspect all wire harness connections between the water level sensor and control board.
  4. Check for damaged, corroded, or loose connectors.
  5. Test the continuity of the wiring harness with a multimeter.
  6. Clean all electrical contacts with electrical contact cleaner.
  7. If wiring is intact, suspect control board failure.
  8. Replace the control board assembly if necessary.
  9. Reconnect all harnesses and secure connections.
  10. Power up and run diagnostic tests to verify communication.

As an Amazon Associate, we earn from qualifying purchases through links on this page.

Still Not Working?

If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.

Browse all Maytag error codes: Maytag Error Codes

When It’s Better to Replace Than Repair

Sometimes replacing an appliance makes more financial sense than putting more money into repairs.
Here are a few signs it may be time to shop for a new one:

  • Appliance over 8-10 years old
  • Repair cost over 50% of replacement
  • Multiple recent breakdowns
  • Major component failure

Recommended Replacement Options

Budget Option

Top Rated Washers Under $600

  • Amazon’s Highest-Rated Value Models
  • Free ‘Room of Choice’ Delivery Available
  • Professional Haul-away Options at Checkout


View Top Rated Models & Delivery Options

Mid-Range Option

Top Rated Washers $600 to $1,000

  • Best-Sellers with Thousands of 5-Star Reviews
  • Expert Installation & Hookup Services available
  • Protection Plans for Long-Term Peace of Mind


View Top Rated Models & Delivery Options

Premium Option

Top Rated Washers Over $1,000

  • Top-of-the-Line Performance & Technology
  • White-Glove Delivery and Haul-away eligible
  • Comprehensive Warranty & Support Options


View Top Rated Models & Delivery Options

Why Upgrade via Amazon?

  • Fast, Scheduled Delivery – You pick the date and time
  • Expert Installation – Professional setup available for most models
  • Old Appliance Haul-away – They’ll take your broken unit when they leave
  • Easy Returns – Buy with confidence from a leader in customer service

As an Amazon Associate, we earn from qualifying purchases.