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
- Check display or indicators on the other drawer for a primary error code (e.g., F9/Fault)
- Resolve that primary error first (e.g., clear obstructions, reset unit)
- Once the other drawer fault is cleared, attempt to restart dishwasher cycle in the drawer showing U04
Technician Only Service and diagnostic test
- Diagnose primary fault in the other drawer (e.g., F9 electronics fault, water inlet or drain issue) using diagnostic mode
- Check wiring harnesses, connectors between drawers, and control boards for fault signals
- 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
- 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.
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.
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.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
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.
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.
Braided Dishwasher Inlet Hose
For replacement of an externally damaged supply hose. Verify connection size, length, and appliance installation requirements before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
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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