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
- Press and hold START/CANCEL for ~3–5 seconds to exit test mode
- Alternatively, turn off power at the circuit breaker or unplug the dishwasher for 3–5 minutes then restore power
- Close door securely and restart normal wash cycle
Technician Only Check control panel/entry into test mode
- Verify if diagnostic mode was entered intentionally via control sequence
- Check wiring/connectors for control panel to main control board if the UL code appears spontaneously
- 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)
- If UL persists after exiting test mode and resets, or other error codes appear alongside it — professional diagnostic may be needed
Next step
Choose the next step for UL
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
User Interface Board
Receives button or touch input and controls the appliance display and indicators.
- Typical part-only price
- $70 - $220
- DIY difficulty
- Medium
- Estimated time
- 20-60 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.
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
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.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
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 | 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: 2026-07-25
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