Error code · Dishwasher

Whirlpool Dishwasher F3E2 Error: Thermistor or OWI Sensor

Medium · inspection needed

Code: F3E2
Appliance: Dishwasher
Brand: Whirlpool
Warranty: 30-day workmanship

What F3E2 means

F3E2 on a Whirlpool built-in dishwasher, a family that includes the WDF520PADM, lists the thermistor or the OWI sensor as the potential cause. The thermistor reads water temperature, and the OWI sensor reads how dirty the water is, so the control uses both to decide heating and cycle length. When either reading is out of range, the display shows F3E2 and the cycle may stop, run oddly, or never get started.

Common causes of F3E2

Thermistor reading and its connector
OWI (water cleanliness) sensor and its wiring
Control board input that reads those sensors
A temporary reading error that clears on power-up

✓ One safe check you can try

1. Cycle the power: unplug the dishwasher for 30 seconds and plug it back in. For a hard-wired unit, turn the breaker off for 30 seconds, then on. 2. Close the door firmly and run a normal cycle. 3. Watch whether F3E2 shows again at the same point in the cycle. 4. If it returns, leave the dishwasher alone and call us.

! Why to stop there

The display cannot tell us whether the sensor or the wiring behind it is the problem
A sensor can read fine cold and drift once the water heats
We test the readings, then send you a written price before we replace anything

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Dishwasher codes

F8E2Whirlpool Built-In Dishwasher F8E2 and the Fill Valve Circuit F8E4Whirlpool Dishwasher F8E4 Error on a New Install: Fill and Float Checks F8E5Whirlpool Dishwasher Code F8E5: Fill Valve Stuck Open, Act Now F9E1Whirlpool Built-In Dishwasher F9E1 Means Water Is Draining Too Slowly F9E2Whirlpool Dishwasher Code F9E2: Drain Motor Circuit Check FAE4Whirlpool Dishwasher FAE4 or F10E4 Points to the Diverter Valve FAE5Whirlpool Dishwasher FAE5 or F10E5: A Diverter Leak H2OWhirlpool Dishwasher H2O on the Display: No Water Detected

F3E2F3E2 questions

What do the thermistor and OWI sensor do?

The thermistor tells the control how hot the water is. The OWI sensor judges how dirty the water is. Together they set heating and cycle length, so a bad reading on either can raise F3E2.

Can I keep using the dishwasher with F3E2?

You can try a cycle after a power reset, but results may be poor, with dishes not heating or rinsing as designed. If the code returns, stop and have the readings tested.

Is a sensor repair worth it on an older unit?

Often yes, since sensors are usually a modest repair next to a new dishwasher. We tell you honestly if the rest of the machine makes repair a poor bet.

Book a visit

Still seeing F3E2?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 589-6107