Whirlpool Dishwasher Error Codes
20 error codes with causes and fixes
- F24Overfill float switch stuck openF24 reports the overfill float switch in the front-right tub floor is stuck in the open position. The control interprets this as a flood risk and stops filling or running until the switch resets.
- F21Heater relay not switching properlyF21 on legacy Whirlpool dishwasher displays indicates the heater relay on the control board is not switching the heating element correctly. The machine may finish cycles with cold water and wet dishes.
- F2E2User interface cannot talk to main controlF2E2 means the touchpad user interface cannot communicate with the main control board inside the door. The display may freeze, flash, or show F2E2 alternating with blank segments.
- F8E2Drain pump electrical circuit faultF8E2 means the drain pump motor circuit has an electrical fault—open, shorted, or not responding when the control energizes drain. Water remains in the tub after the drain phase times out.
- F6E4Float switch open or dishwasher not levelF6E4 is the modern F/E code for an open overfill float switch—the same condition as F24 on numeric displays. The control detected the flood sensor tripped before or during a fill step.
- F7E1Heating element not workingF7E1 means the dishwasher ran a cycle but the control detected no heat from the wash or dry heater. Dishes come out cold and wet even though the cycle appeared to complete.
- F9E1Diverter disc cannot find positionF9E1 means the wash diverter motor cannot locate its home position to route water between upper and lower spray arms. The control times out waiting for the position sensor to confirm arm selection.
- F5E1Door not latched within three seconds of StartF5E1 means the door was not confirmed latched within three seconds of pressing Start/Resume, or one of the two door switches failed. The dishwasher will not fill until the latch circuit reports closed.
- F3E2OWI or thermistor temperature circuit shortedF3E2 means the Optical Water Indicator or tub thermistor temperature circuit reads shorted. The control cannot measure wash water temperature or turbidity for cycle optimization.
- F2E4Touch panel or UI wiring faultF2E4 indicates a fault with the user interface or its associated wiring—similar to laundry F2E4 alerts. The touch panel may not register inputs or may flash F2E4 when a cycle is selected.
- F1E2Main control board memory corruptionF1E2 means the main control board detected corrupted memory or a failed self-check on its EEPROM. The dishwasher may power on but refuse to start cycles or may flash F1E2 immediately.
- F8E1Slow drain or inadequate water levelF8E1 means the dishwasher did not reach the expected water level or could not drain within the allotted time. The tub may show a shallow pool at the bottom when the code appears.
- F6E2Water inlet valve electrical faultF6E2 means the water inlet fill valve circuit has an electrical fault—the valve did not open when commanded or the control cannot verify valve current. The tub stays dry through the fill window.
- F7E2Heating element stuck onF7E2 is a serious fault—the control detected the heating element staying energized when it should be off. This can overheat water and damage the tub if ignored.
- F4E1Circulation pump communication failureF4E1 means the main control lost communication with the circulation (wash) pump motor. Spray arms may not spin and the control halts the cycle shortly after fill completes.
- F8E4Detergent dispenser flow not detectedF8E4 means the control opened the detergent dispenser but did not detect the expected water flow or actuator movement through the dispenser chamber. Wash performance drops because main wash detergent never entered the tub.
- F6E1Vent and fan circuit electrical faultF6E1 is a vent/electric fault on Whirlpool dishwashers with a drying fan in the door vent assembly—the control detected an open or shorted circuit when energizing the vent fan during the dry phase.
- E1F9Wash temperature sensor reading invalidE1F9 reports the wash temperature sensor (thermistor in the tub or OWI assembly) sent resistance outside the expected range. The control cannot regulate heat or verify sanitizing temperature without valid readings.
- E1F1Optical water indicator sensor faultE1F1 flags the Optical Water Indicator—the sensor in the tub floor that detects water presence and turbidity. Whirlpool uses OWI feedback for fill verification and soil sensing; E1F1 means the signal was missing or out of range.
- FAE4Dispenser actuator position not confirmedFAE4 means the detergent dispenser actuator did not reach the expected position after the control sent open command—related to F8E4 but specifically on models that monitor actuator travel with a position switch.