Frigidaire Dishwasher Error UL

⚡ Quick Answer: The Frigidaire dishwasher UL error code indicates that the unit is in diagnostic mode, specifically the UL/relay test mode. This mode is not indicativ... ✅ DIY Fixable

What Does Error UL Mean?

The Frigidaire dishwasher UL error code indicates that the unit is in diagnostic mode, specifically the UL/relay test mode. This mode is not indicative of a functional fault but rather a test state. When the UL code appears, the dishwasher will not proceed with the wash cycle and may emit a continuous beeping sound. It often shows immediately after entering diagnostic mode. To resolve this, you can exit the test mode and reset the dishwasher.

Common Symptoms:

  • Alphanumeric display showing UL instead of normal cycle indicators
  • Dishwasher does not proceed with wash cycle when code displayed
  • Often appears immediately after entering diagnostic mode

Possible Causes

  • Diagnostic/relay test mode activated (medium)

How to Fix Error UL

DIY Fix Exit diagnostic/Test mode and reset dishwasher

  1. Press and hold START/CANCEL for ~3–5 seconds to exit test mode
  2. Alternatively, turn off power at the circuit breaker or unplug the dishwasher for 3–5 minutes then restore power
  3. Close door securely and restart normal wash cycle

Technician Only Check control panel/entry into test mode

  1. Verify if diagnostic mode was entered intentionally via control sequence
  2. Check wiring/connectors for control panel to main control board if the UL code appears spontaneously
  3. Ensure that user isn’t accidentally triggering test mode during button sequences

Parts needed: Control panel assembly, Main control board (only if code persists after reset and test mode cannot be exited)

🛑 When to Call a Pro:
  • If UL persists after exiting test mode and resets, or other error codes appear alongside it — professional diagnostic may be needed

Technical Specifications

wattage 1440W
component Leak Sensor
resistance 1-5 ohms
part_number 154569601
voltage_rating 120V AC

Common Questions

What does UL error mean on frigidaire dishwasher?

UL indicates the dishwasher is in diagnostic mode, preventing normal operation.

Can I fix frigidaire dishwasher UL error myself?

Yes, you can exit test mode by pressing START/CANCEL or power cycling the unit.

How much does it cost to fix UL error?

Estimated repair cost ranges from $0 to $350 depending on needed parts.

When should I call a technician for UL?

Call a technician if the UL code persists after resetting or if other error codes appear.

Sources & References

Data last verified: 2026-07-07

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