KitchenAid Dishwasher Error 8-4

⚡ Quick Answer: The KitchenAid Dishwasher error code 8-4 indicates a malfunction related to the drain pump or float switch. Typically, this error is signaled by a bli... ✅ DIY Fixable

What Does Error 8-4 Mean?

The KitchenAid Dishwasher error code 8-4 indicates a malfunction related to the drain pump or float switch. Typically, this error is signaled by a blinking clean light pattern of 8 flashes followed by 4. It may prevent the dishwasher from starting or cause it to stop mid-cycle. Users might notice standing water or unusual noises during operation, suggesting a blockage or malfunction in the drainage system or float switch.

Common Symptoms:

  • Clean light blinking in pattern: 8 flashes then 4 flashes
  • Dishwasher may not start or may stop mid‑cycle
  • Standing water or signs of water under the base
  • Possible intermittent pump activity

Possible Causes

  • Float switch triggered by water under the dishwasher base (medium)
  • Drain system restriction or drain/pump malfunction (medium)

How to Fix Error 8-4

DIY Fix Check for water under the dishwasher and clear float switch

  1. Turn off power to the dishwasher at the breaker.
  2. Remove the kick plate/toe‑kick and inspect for water in the base tray.
  3. Dry any visible water around the float switch and ensure the float can move freely.
  4. Restore power and test a cycle.

DIY Fix Inspect and clear drainage path

  1. Turn off the dishwasher and disconnect power.
  2. Check the drain hose for kinks or visible blockages.
  3. Run water through the hose to verify flow.
  4. Clean the dishwasher filter and sump area of debris.
  5. Reconnect and run a test cycle.

Technician Only Inspect drain pump and float switch assembly

  1. Access the dishwasher lower panel and remove covers.
  2. Test the float switch and its wiring for continuity.
  3. Test the drain pump motor and impeller for operation and electrical continuity.
  4. Replace defective components as needed.

Parts needed: Float switch, Drain pump assembly, Associated wiring/connectors

🛑 When to Call a Pro:
  • If water continues to accumulate under the unit after drying and repeat errors occur
  • If drain pump or wiring tests indicate electrical faults
  • If user is uncomfortable accessing internal components

Next step

Choose the next step for 8-4

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Based on diagnostic data

Most relevant component to inspect

Float Switch

Detects the maximum water level to prevent overflow and potential flooding.

Typical part-only price
$15 - $40
DIY difficulty
Easy
Estimated time
10-20 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Drain Pump

Pumps waste water out of the appliance during the drain cycle.

$35 - $80 · Easy · 15-30 mins

Check fit & price
Possible related component

Wiring Harness

Connects controls, sensors, motors, and other electrical components inside the appliance.

$20 - $120 · Medium · 30-90 mins

Check fit & price
Model number required

Model-compatible Dishwasher parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.

Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Dishwasher Cleaner and Descaler

Supports routine removal of mineral scale, grease, and odor. It is maintenance, not a repair for a failed pump, valve, or control.

View maintenance supply
Maintenance supply

Braided Dishwasher Inlet Hose

For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Technical Specifications

wattage 60W
component Drain Pump
resistance 10-30 ohms
part_number W10884390
voltage_rating 120V AC

Common Questions

What does 8-4 error mean on KitchenAid Dishwasher?

The 8-4 error indicates a malfunction in the drain pump or float switch, preventing proper operation.

Can I fix KitchenAid Dishwasher 8-4 error myself?

Yes, you can check for water under the unit and clear the float switch. Inspect the drain hose for blockages.

How much does it cost to fix 8-4 error?

The estimated repair cost ranges from $50 to $250+, depending on parts and labor.

When should I call a technician for 8-4?

Call a technician if water continues to accumulate under the unit or if electrical faults are detected.

Data last verified: 2026-07-26

User Comments (0)

Share your experience or solution below.

Be the first to comment!