Fisher & Paykel Dishwasher Error U04

⚡ Quick Answer: The Fisher & Paykel dishwasher U04 error indicates a fault in the other drawer of the DishDrawer™ model. This issue often prevents the affected drawer... ✅ DIY Fixable

What Does Error U04 Mean?

The Fisher & Paykel dishwasher U04 error indicates a fault in the other drawer of the DishDrawer™ model. This issue often prevents the affected drawer from operating and is usually accompanied by a primary fault code, such as F9, displayed on the other drawer. To resolve this, check for any primary errors in the other drawer, clear any obstructions, and restart the dishwasher cycle in the drawer showing U04 once the fault is cleared.

Common Symptoms:

  • Affected drawer will not operate
  • Other drawer displays a primary fault (e.g., F9)
  • Dishwasher may refuse to start cycle in affected drawer

Possible Causes

  • Fault in the other drawer causing U4 in this drawer (high)

How to Fix Error U04

DIY Fix Clear secondary drawer fault and restart

  1. Check display or indicators on the other drawer for a primary error code (e.g., F9/Fault)
  2. Resolve that primary error first (e.g., clear obstructions, reset unit)
  3. Once the other drawer fault is cleared, attempt to restart dishwasher cycle in the drawer showing U04

Technician Only Service and diagnostic test

  1. Diagnose primary fault in the other drawer (e.g., F9 electronics fault, water inlet or drain issue) using diagnostic mode
  2. Check wiring harnesses, connectors between drawers, and control boards for fault signals
  3. Replace faulty components (e.g., control board, sensors) associated with the originating fault as needed

Parts needed: Control board (if primary fault), Wiring harness/connectors

🛑 When to Call a Pro:
  • If you cannot identify or resolve the primary fault in the other drawer
  • If faults persist after clearing errors and restarting

Next step

Choose the next step for U04

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

Main Control Board

The central brain of the appliance that controls all components, cycles, and timings.

Typical part-only price
$120 - $280
DIY difficulty
Medium
Estimated time
20-40 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.

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Technical Specifications

wattage 50W
component Drain Pump Assembly
resistance 10-20 ohms
part_number FP-DW-PUMP-001
voltage_rating 240V AC

Common Questions

What does U04 error mean on Fisher & Paykel dishwasher?

The U04 error indicates a fault in the other drawer, preventing the affected drawer from operating.

Can I fix Fisher & Paykel dishwasher U04 error myself?

Yes, check the other drawer for primary errors and clear them before restarting the affected drawer.

How much does it cost to fix U04 error?

Repair costs range from $150 to $400, depending on parts and region.

When should I call a technician for U04?

Call a technician if you cannot resolve the primary fault or if issues persist after restarting.

Sources & References

Data last verified: 2026-07-25

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