F1 appears when the sensor that reads water temperature sends an inconsistent signal to the control board. The dishwasher may refuse to start or heat improperly.
Brand: Whirlpool
Whirlpool Dishwasher Error Code F1 (Temperature Sensor)
F1 points to the dishwasher’s temperature sensor: the water isn’t being read or heated correctly.
Meaning
Possible causes
No cause is certain until it has been checked on the appliance.
- Likely Sensor connector unplugged or corroded
- Possible Failed temperature sensor
- Rare Damaged wiring
First checks
- Unplug the dishwasher and locate the sensor, usually at the bottom of the tub.
- Check the connector's condition.
- Measure the sensor's resistance with a multimeter if you have one.
What not to do
- Running several empty cycles to see if the code clears.
An error code varies by brand
The same code can have a different meaning depending on the brand and model. Always check your appliance's manual before acting.
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When to call a professional
If the simple checks didn’t solve it, if the fix involves electrical wiring, gas, or the refrigerant circuit, or if you have any doubt at all: stop there and hand the appliance to a qualified repair professional.