KitchenAid Dishwasher Error 8-4P

⚡ Quick Answer: The KitchenAid dishwasher error 8-4P indicates a malfunction in the float switch or water detection circuit, signaling water accumulation under or beh... ✅ DIY Fixable

What Does Error 8-4P Mean?

The KitchenAid dishwasher error 8-4P indicates a malfunction in the float switch or water detection circuit, signaling water accumulation under or behind the unit. This is often evidenced by the clean light blinking in an 8-4 pattern, the dishwasher stopping mid-cycle, and potentially standing water in the bottom or drip tray. Common causes include a stuck or faulty float switch, a drain system blockage, or a weak drain pump.

Common Symptoms:

  • Clean light blinks 8 times, then pauses, then 4 times repeatedly
  • Dishwasher stops mid‑cycle
  • May hear pump trying to run in short bursts
  • Possible standing water in bottom or drip tray

Possible Causes

  • Water detected under/behind dishwasher (flood or drip tray water) (medium)
  • Stuck or faulty float switch (medium)
  • Drain system blockage or weak drain pump leading to water accumulation (medium)

How to Fix Error 8-4P

DIY Fix Check for water under the dishwasher and clear drain blockages

  1. Turn off power to the dishwasher (unplug or breaker).
  2. Remove the kick plate/toe kick at the bottom front.
  3. Check for any water in the drip tray and dry it thoroughly.
  4. Inspect the drain hose for kinks or blockages and straighten/clean if needed.
  5. Remove and clean filters in the dishwasher tub to ensure proper drainage.

DIY Fix Inspect and reset the float switch

  1. After drying any water detected, locate the float switch (often accessible from underside or via the front bottom panel).
  2. Ensure the float is free to move and not stuck.
  3. Reconnect any loose float switch wiring.
  4. Restore power and run a short cycle to see if the error clears.

Technician Only Drain pump and internal component diagnosis

  1. Remove dishwasher lower panel and access drain pump assembly.
  2. Test drain pump motor and impeller for proper operation and continuity.
  3. Check and replace the float switch if defective.
  4. Verify control board connections related to the water detection circuit.

Parts needed: drain pump assembly, float switch, pump hose/check valve

🛑 When to Call a Pro:
  • If water continues accumulating under the unit after drying and basic checks.
  • If float switch or pump tests indicate electrical faults requiring replacement.
  • If error persists after user‑level troubleshooting.

Next step

Choose the next step for 8-4P

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

Check during diagnosis

Most relevant component to inspect

Drain Pump

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

Typical part-only price
$35 - $80
DIY difficulty
Easy
Estimated time
15-30 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.

Also check
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Other parts options

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

Possible related component

Float Switch

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

$15 - $40 · Easy · 10-20 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.

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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

note The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering.
part_number None

Common Questions

What does 8‑4P error mean on KitchenAid dishwasher?

The 8‑4P error indicates water accumulation detected by the float switch, causing the dishwasher to stop mid-cycle.

Can I fix KitchenAid dishwasher 8‑4P error myself?

Yes, you can check for water accumulation under the unit and inspect/reset the float switch.

How much does it cost to fix 8‑4P error?

Repair costs for the 8‑4P error typically range from $80 to $300.

When should I call a technician for 8‑4P?

Call a technician if water continues to accumulate after basic checks or if the float switch or pump needs replacement.

Sources & References

Data last verified: 2026-07-31

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