Frigidaire Dishwasher Error TU
⚡ Quick Answer: The Frigidaire dishwasher TU error code indicates a turbidity sensor malfunction, often resulting in the dishwasher failing to drain properly and disp... ✅ DIY Fixable
What Does Error TU Mean?
The Frigidaire dishwasher TU error code indicates a turbidity sensor malfunction, often resulting in the dishwasher failing to drain properly and displaying unusual noises. This error may prevent the cycle from progressing due to a soil sensor fault. Common causes include a dirty or obstructed turbidity sensor lens, a faulty turbidity sensor, or wiring issues between the sensor and the control board. Regular maintenance, such as cleaning the sensor, can help prevent this error.
Common Symptoms:
- Dishwasher displays TU on control panel or during diagnostics
- Dishwasher may not progress through cycle due to soil sensor fault
Possible Causes
- Dirty or obstructed turbidity sensor lens (medium)
- Faulty turbidity sensor (medium)
- Wiring/connectivity issue between turbidity sensor and control board (medium)
How to Fix Error TU
DIY Fix Inspect and clean turbidity sensor
- Disconnect power to dishwasher
- Open dishwasher and remove lower rack and filter assembly
- Locate turbidity sensor (usually near sump/tub bottom)
- Wipe sensor lens gently to remove film and debris
- Reassemble and power dishwasher
- Run a short cycle to see if TU clears
Technician Only Test sensor and wiring, replace parts as needed
- Verify continuity of wiring between turbidity sensor and control board with multimeter
- Inspect connectors for corrosion or damage
- If wiring is good, test turbidity sensor operation per service manual specifications
- Replace turbidity sensor if defective
- Verify control board input if error persists
Parts needed: turbidity sensor, wiring harness/connectors
- If testing wiring or sensor replacement reveals further electrical issues
- If error persists after cleaning and basic troubleshooting
Next step
Choose the next step for TU
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
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
- Typical part-only price
- $20 - $120
- DIY difficulty
- Medium
- Estimated time
- 30-90 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.
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 | 40W |
|---|---|
| component | Drain Pump |
| resistance | 10-20 ohms |
| part_number | 154567101 |
| voltage_rating | 120V AC |
Common Questions
What does TU error mean on Frigidaire dishwasher?
TU error indicates a turbidity sensor malfunction affecting drainage and operation.
Can I fix Frigidaire dishwasher TU error myself?
Yes, you can clean the turbidity sensor by following DIY steps.
How much does it cost to fix TU error?
Repair costs range from $50 to $200 for parts, excluding technician labor.
When should I call a technician for TU?
Call a technician if issues persist after basic troubleshooting or if further electrical problems are suspected.
Data last verified: 2026-07-25
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