Fisher & Paykel Dishwasher Error U03

⚡ Quick Answer: The U03 error code on your Fisher & Paykel dishwasher indicates an issue with the drain pump, often linked to a lid sensor fault or improper water fil... ✅ DIY Fixable

What Does Error U03 Mean?

The U03 error code on your Fisher & Paykel dishwasher indicates an issue with the drain pump, often linked to a lid sensor fault or improper water fill/pressure conditions. During operation, the dishwasher may stop mid-cycle and emit beeping sounds, displaying the U03 code. It's crucial to ensure the dishwasher lid closes fully and that there are no obstructions affecting the sensor. Additionally, check that the household water supply is fully open and that hoses are free from kinks or blockages.

Common Symptoms:

  • Dishwasher stops mid‑cycle and beeps with U3 displayed or indicated via lights/signals during operation
  • Possible failure to detect correct fill level or lid position

Possible Causes

  • Lid sensor fault / misdetection (medium)
  • Water fill/pressure fault (low water pressure or incorrect fill detection) (medium)

How to Fix Error U03

DIY Fix Check lid/drawer and water conditions

  1. Ensure the dishwasher lid/drawer closes fully and nothing obstructs the sensor area.
  2. Open and wipe dry the lid/drawer sensor area to clear residue that may cause false readings.
  3. Check household water supply tap is fully open and hoses are not kinked or blocked.

Technician Only Diagnostic and component testing

  1. Enter service/diagnostic mode if supported by the model to read system water pressure and sensor statuses.
  2. Test the lid sensor and associated wiring for continuity and proper operation.
  3. Verify water inlet pressure and confirm fill sensor/readings are within specifications.

Parts needed: Lid sensor assembly, Water inlet pressure switch or sensor, Associated wiring harness

🛑 When to Call a Pro:
  • Error persists after basic lid and water supply checks.
  • Dishwasher fails to enter or complete cycles regularly with the same code.
  • Internal sensors or wiring tests indicate faults requiring replacement.

Technical Specifications

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

Common Questions

What does U03 error mean on fisher & paykel dishwasher?

U03 indicates a malfunction in the drain pump, often due to a lid sensor fault or water fill issue.

Can I fix fisher & paykel dishwasher U03 error myself?

Yes, you can check the lid for obstructions and ensure the water supply is open and free of blockages.

How much does it cost to fix U03 error?

The estimated repair cost for the U03 error ranges from $100 to $300, depending on parts and labor.

When should I call a technician for U03?

Call a technician if the error persists after basic checks or if the dishwasher frequently fails to complete cycles.

Sources & References

Data last verified: 2026-03-13

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