Kenmore Washer F35 Error: Analog Pressure Sensor Failure / Excessive Suds
The kenmore washer f35 error is a fault signal from the control board — this guide walks through what it means, common causes, and safe diagnostic steps. What Does Kenmore Washer Error Code F35 Mean? F35 on a Kenmore Elite HE front-load washer (110.xx Whirlpool platform) has two distinct causes that display the same code, […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. If F35 is caused by excess suds, the washer is mechanically fine and safe to use after switching to HE detergent and completing a Rinse and Spin. If F35 is caused by a failed pressure sensor, the washer cannot reliably measure water level and may overfill — do not use it for full wash cycles until the sensor is replaced.
Can I reset the code?
Yes. A suds-induced F35 typically clears once the Kenmore Elite completes its slow-spin suds-reduction sequence. A sensor-induced F35 may temporarily clear after a power reset but returns as soon as the board re-polls the sensor voltage.
When to stop immediately?
Stop if you notice: Suds are leaking past the door gasket onto the laundry room floor, F35 returns on every cycle even after switching to HE detergent and using minimum amounts.
Symptoms You May Notice
F35 and SUDS alternating on the display during wash or rinse
The Kenmore Elite pauses mid-cycle and alternates F35 with "SUDS" on the seven-segment display. The washer may attempt a slow tumble spin to break down suds before resuming, adding 15–30 minutes to the cycle.
Suds or foam visible through the door glass or leaking from the door boot
Excessive suds can overflow the drum and push past the door gasket, causing foam to appear on the door glass or leak onto the laundry room floor even though the door lock is engaged.
Cycle stalls indefinitely without suds visible
When the pressure sensor itself has failed (rather than a suds condition), F35 appears with no foam visible. The washer stalls and will not drain or advance because the board has lost reliable water level data.
Water level sits unusually high or low for the selected cycle
The tub fills well past the normal waterline or barely covers the laundry before agitation starts, because the pressure sensor is reporting a drifting or incorrect level to the control board.
Possible Causes
Non-HE or excess HE detergent creating over-sudsing
Standard (non-HE) detergents and even HE detergent used in excess generate far more foam than the low-water HE wash system can handle, triggering the suds-detection logic on the pressure sensor circuit.
DIY PossibleAnalog pressure sensor (APS) failure
The analog pressure sensor mounted on the top or rear of the outer tub has failed electronically, sending a voltage outside the valid 0.5–4.5 V window to the control board regardless of actual water level.
DIY PossibleBlocked or kinked pressure sensor air hose
The small rubber hose connecting the bottom of the outer tub to the pressure sensor has a water plug, lint block, or kink that prevents accurate pressure transmission — the sensor reads incorrectly even though it is electrically healthy.
DIY PossibleSafe Checks You Can Do
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1
Run a Rinse and Spin cycle and switch to HE detergent
If suds are visible, select Rinse and Spin to allow the machine to flush the suds. Do not add more detergent. After the cycle, verify you are using only HE-labeled detergent, and use no more than the minimum fill line in the detergent dispenser. One tablespoon of HE detergent is typically sufficient for a full load in Kenmore Elite front-loaders.
Suds residue from years of standard-detergent use can accumulate inside the outer tub and re-foam on subsequent washes. Run two or three empty cycles on hot with no detergent to flush residual soap from the tub and hoses.
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2
Inspect and clear the pressure sensor air hose
Unplug the washer. Remove the top panel (two rear screws, slide back, lift off). Locate the analog pressure sensor — a small cylindrical or rectangular component connected by a narrow rubber hose to the outer tub. Disconnect the hose at the sensor end and blow through it firmly. You should feel air resistance from the water in the tub chamber at the other end; a blocked hose will feel completely sealed. Clear any water or lint plug, reconnect, and restore power.
Blowing into the hose from the sensor end while the tub is empty should produce a faint gurgling sound from the tub side. No gurgle means the hose has a plug or the tub port is blocked with lint.
When to Call a Professional
Contact a qualified technician if:
- Pressure sensor output voltage measured at the control board connector is outside 0.5–4.5 V with the tub empty
- Air hose is clear and undamaged but F35 persists — sensor has failed electronically
- F35 clears temporarily after reset but returns within minutes on a dry empty tub with no detergent
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