Kenmore Dishwasher Switch Replacement Guide — Cost, Signs & DIY Tips

Kenmore dishwashers use several types of switches, and the one causing your problem depends on the symptom. The door switch (safety interlock) prevents operation when the door is open. The float switch prevents overfilling by detecting water level. The cycle selector switch (on models with mechanical timers) routes power to different cycle components. Because Kenmore dishwashers are built by multiple OEM manufacturers, switch designs vary between platforms. Whirlpool-built models (665-prefix) tend to use individual microswitches, while LG-built Kenmore Elite models (722-prefix) integrate switching functions into the control board assembly.

Decode Your Model Number

• 665 — Whirlpool: Individual microswitches for door, float, and cycle selection (older models). Newer 665 models moved selector functions to the electronic control board.
• 722 — LG (Kenmore Elite): Door switch is a discrete component, but cycle selection is entirely electronic. Float switch still exists as a standalone component.
• 587 — Frigidaire: Similar to Whirlpool — discrete switches.

Which Switch Is Failing? Symptom Guide

Door switch failure:

• Dishwasher will not start at all — no lights, no sounds, no response to any button press
• Dishwasher stops mid-cycle when you bump or lean against the door
• The control panel lights up but pressing Start does nothing — the board does not see the door as closed

Float switch failure:

• Dishwasher overfills with water — the float is stuck down or the switch contacts are fused closed
• Dishwasher will not fill with water — the float is stuck up or the switch is permanently open
• Water on the kitchen floor after a cycle — overflow caused by a non-functional float switch

Cycle selector switch failure (older models with mechanical timers):

• The dishwasher runs on one cycle regardless of dial position
• The dial turns but nothing happens on certain cycle selections
• Timer advances but the wash motor or heater does not engage at the expected point

Switch Cost Breakdown

Switches are among the cheapest parts in a dishwasher. The door switch especially is a common failure point and an excellent first-time DIY repair.

How to Replace the Door Switch

Whirlpool-based models (665-prefix):

1. Disconnect power at the breaker
2. Open the door and remove the inner door panel screws (Torx T20)
3. The door switch is mounted at the top of the door behind the latch mechanism
4. Disconnect the wire connectors (2 wires for a single-pole switch, 4 wires for a dual-pole)
5. Release the mounting tab or remove the single mounting screw
6. Test the old switch with a multimeter: it should show continuity when pressed and open when released. If it reads open in both positions, it is confirmed bad.
7. Install the new switch, reconnect wires, reassemble

LG-based models (722-prefix):

1. Disconnect power
2. Remove the outer door panel
3. The door switch is near the latch assembly with a keyed multi-pin connector
4. Remove the mounting screw, swap the switch, reconnect

How to Replace the Float Switch

1. Disconnect power
2. Remove the lower dish rack and locate the float assembly — it is a small dome-shaped plastic piece in the front-left or front-right corner of the tub floor
3. Lift the float dome off (it pulls straight up)
4. Access the float switch from below by removing the kickplate
5. The float switch is directly beneath the float assembly, mounted to the tub floor with a bracket and connected by 2 wires
6. Disconnect the wires, remove the bracket screw, and swap the switch
7. Verify the float moves freely up and down before reassembling

Tools required: Torx T20 (665-prefix), Phillips #2, multimeter, 1/4-inch nut driver.

When to DIY vs. Call a Professional

• Door switch: Beginner-friendly, 20–30 minutes. One of the easiest dishwasher repairs.
• Float switch: Beginner-friendly, 25–35 minutes. Working from below through the kickplate is the only mild challenge.
• Cycle selector (older models): Moderate. Involves removing the control panel and dealing with multiple wire connections. 45–60 minutes.
• Call a professional if: Replacing the door switch does not restore operation (the control board may have failed), or if the float assembly moves freely but the dishwasher still overfills (the inlet valve may be stuck open).

How Long Do Kenmore Dishwasher Switches Last?

• Door switches: 5–10 years. They are cycled every time you open and close the door — high-use component.
• Float switches: 8–15 years. Rarely activated during normal operation, so they last longer.
• Cycle selectors: 10–20 years on mechanical models. These are robust rotary switches.

Maintenance Tips

• Keep the float assembly clean — food debris or mineral deposits under the float dome can prevent it from moving freely, mimicking a bad float switch
• Do not slam the dishwasher door — repeated impact fatigues the door switch contacts
• On older models with mechanical timers, turn the cycle dial gently — forcing it wears the selector switch contacts
• Clean detergent and mineral deposits from around the door switch area annually

Decode Your Kenmore Dishwasher Model Number

Every Kenmore repair starts with identifying the OEM manufacturer from the first three digits of your model number:

• 665 — Whirlpool (most common for Kenmore dishwashers 2000-2020). Uses Whirlpool W10/WP part numbers. Diagnostic mode: press three buttons in sequence within 5 seconds.
• 587 — Frigidaire/Electrolux. Uses Frigidaire-specific parts. Diagnostic: hold Start and Cancel simultaneously.
• 630 — Samsung (newer models). Samsung-specific parts and diagnostics.
• 722 — LG (Kenmore Elite). Uses LG part numbers (EBR prefix). Diagnostic: press Power then Start within 3 seconds.

This decode determines which parts fit your machine, which diagnostic procedures to use, and where to find the best prices. The Kenmore label on the front means nothing for parts sourcing — always reference the OEM part number.

Cost-saving strategy: Once you know the OEM manufacturer, search for the Whirlpool or LG OEM part number directly instead of the Kenmore-branded equivalent. The identical part under the OEM brand name typically costs 30-40% less.

Common Kenmore Dishwasher Error Codes by Platform

Whirlpool-based (665-prefix): F-number/E-number system. F1 E1 (control board), F2 E2 (stuck button), F5 E1/E2 (door switch), F6 E1-E4 (communication), F8 E1 (water inlet), F9 E1 (drain).

LG-based (722-prefix Kenmore Elite): LE/IE (motor/inlet), OE (drain), HE (heater), tE (thermistor), FE (overfill).

Knowing your platform's error codes helps diagnose the failing component before ordering parts.

FAQ

How much does it cost to replace a Kenmore Dishwasher Switch?

DIY cost is $8–$50 depending on switch type. Professional installation runs $65–$220. Door and float switches are among the cheapest dishwasher parts.

My Kenmore dishwasher is completely dead — is it the door switch?

Possibly. A failed door switch in the open position cuts all power to the control system. Test by disconnecting power, accessing the switch, and checking continuity with a multimeter. However, also check the household breaker and the dishwasher junction box connections.

How do I test a Kenmore dishwasher door switch?

Disconnect power, access the switch behind the inner door panel, disconnect one wire, and test with a multimeter. The switch should show continuity when pressed (door closed) and open when released (door open). Reversed or no change in either position means the switch is bad.

Can a bad float switch cause water damage?

Yes — a float switch stuck in the closed position (or with fused contacts) will not signal the inlet valve to stop filling. The dishwasher can overflow, causing significant water damage. If you notice your dishwasher overfilling, disconnect power immediately and check the float assembly.

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