Kenmore · Dishwasher
Kenmore Dishwasher F5 Error Code
Turbidity sensor fault
What this error means
F5 means the turbidity or soil sensor in the sump reported an invalid reading. Auto-wash cycles on newer Kenmore 665 models use this sensor to adjust cycle length based on water clarity.
How F5 is detected
Kenmore dishwasher models lock the door or lid before energizing fill, heat, or high-speed spin. F5 means the latch switch never sent a "locked" signal to the main control, or the lock motor did not complete its travel. On Kenmore 665.13223K901, Kenmore 665.17789K801, and similar variants, clothing caught in the gasket, a misaligned strike, or a failed latch assembly are the most common mechanical causes—not the board itself.
Inspect the door gasket perimeter and strike alignment before replacing the latch. Grease film coating the optical sensor lens is reported frequently on this code. After correcting mechanical issues, remove the lower filter and wipe the soil sensor window with a soft cloth. If the latch clicks but F5 persists, the door lock switch or wiring harness to the control board likely needs testing with a multimeter.
Do not force the door open during an active cycle; wait for the lock to release when the board de-energizes the lock motor—usually two to three minutes after canceling power on most Kenmore units.
Common causes
- Grease film coating the optical sensor lens
- Failed turbidity sensor sending constant high soil signal
- Wiring open between sensor and control board
- Cloudy rinse aid residue blocking the light path
Step-by-step fixes
- 1Remove the lower filter and wipe the soil sensor window with a soft cloth
- 2Run a cup of white vinegar through an empty cycle to dissolve grease film
- 3Reseat the sensor harness at the sump
- 4Replace the turbidity sensor if readings stay fixed after cleaning
When to call a technician
New turbidity sensor with immediate F5 may indicate control board analog input failure.
Affected models
- Kenmore 665.13223K901
- Kenmore 665.17789K801
- Kenmore 665.14703N510
Prevention & maintenance
- Wipe the door gasket weekly and avoid overloading items against the seal—F5 often starts as a slow leak or latch misalignment.
- Record when F5 appears in the cycle and whether it clears after a 60-second power reset on your Kenmore dishwasher—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for F5; Kenmore uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting F5; reversed plugs on pumps and valves cause immediate repeat faults.