KitchenAid is a brand of kitchenware owned by the Whirlpool Corporation. The history of KitchenAid started in 1919. The brand was created by Hobart Corporation, but Whirlpool purchased it in 1986.

By understanding what is wrong with your KitchenAid dishwasher, you can attempt to fix it yourself. The error code your appliance is displaying may give you a hint as to what the issue is.

KitchenAid KUDD01S dishwasher error codes

Error Codes	Possible Causes	What to do
	Flood switch has been activated.	Turn the water and power supply to the dishwasher off and call your authorized service center.
	Motor problem.	Call your authorized service center.
	Temperature sensor failed.	Make sure that water going in through the inlet hose is not hotter than 149°F (65°C). Call your authorized service center.
	Temperature sensor or element failure.	Call your authorized service center.
	Electronics malfunction.
	Fill failure.	- Turn on the dishwasher water supply.
		- Make sure the spray arm can rotate around the center. If the dishwasher is full of water, it will need to be emptied manually.

KitchenAid KUDE20FB0 dishwasher error codes

Function Code	Problem Code	Causes	What to check
1 - control	1-pilot stuck on	Control detected k400 pilot relay stuck closed.	1. Unplug dishwasher or disconnect power.
			2. Check all loads on k400 pilot relay for shorts.
			3. Replace control and all shorted components.
	2-control Software Issue	Damaged or corrupted memory on control board; incompatible software components inside micro.	1. Unplug dishwasher or disconnect power.
			2. Replace control board.
2-user interface	1-stuck Key	Control detected stuck key(s) in keypad or keypad connection.	Check responsiveness of each key.
			(1) if some keys do not respond, then:
			- unplug dishwasher or disconnect power.
			- disassemble door and disconnect keypad connection
			From control or lcd display module.
			- verify all other connections to control are made.
			- re-assemble door but do not close door.
			- plug in dishwasher or reconnect power
			- wait at least 7 seconds for control to power up
			Completely.
			- close dishwasher door & monitor control response:
			(a) if control is ok (no longer sees stuck keys with keypad unplugged), it will respond by turning on the drain motor for 2 minutes. Replace keypad and console.
			(b) if control is not ok (still sees stuck keys with keypad unplugged), it will not turn on drain motor. Wait for at least 10 seconds. If still no drain response, then replace control or lcd display module (whichever one the keypad was connected to).
			(2) if keys appear or intermittent, and keypad is capacitive touch type, then:
			(a) verify tub brackets are screwed to underside of countertop and not hanging over keys (if screw heads too close, relocate screw to alternate hole).
			(b) check for evidence of moisture or debris on the surface of the keys; if evident, clean and instruct customer about keeping surface clean. Check error code history for vent error 10-2 and/or fan error 10-3 as potential cause of condensation on user interface.
	2-no response from ul	User interface can not communicate with main control. Loose user interface connection.	1. Unplug dishwasher or disconnect power.
			2. Check connections between lcd display module and pic connector on the control If connection(s) loose, then re-connect.
			3. Check for 5vdc from pic-2 to pic-4. If no voltage at control, remove power and replace main control board
		Wrong control installed	Verify correct control is installed. Control should have no connector present at p1a. If wrong disconnect power and replace control
3-thermistor/Owi	1-open	- open connection or component in temperature sensing circuit.	1. Check operation of temperature sensor in service diagnostics cycle.
		- open or faulty temperature sensor	2. Unplug dishwasher or disconnect power.
		- faulty temperature sensor input on control.	3. Check all components and connections in the temperature sensing circuit with meter, fix/replace open connection / part
	2-shorted	- incoming water temperature above 167f(75c)	1. Check incoming water temperature.
		- shorted connection or component in temperature sensing circuit.	2. Check operation of temperature sensor in service diagnostics cycle.
		- shorted or faulty temperature sensor.	3. Unplug dishwasher or disconnect power.
		- faulty temperature sensor input on control.	4. Check all components and connections in the temperature sensing circuit with meter, fix/replace shorted wires/part
3-thermistor/Owi	3-failed Calibration	Owi failure	1. Unplug dishwasher or disconnect power.
			2. Remove owi and check lens surface. Lens should be clear and surface should be free of debris and scratches. Clean lens or replace owi as needed.
			3. Check all connections in soil sensing circuit with meter, fix/replace bad connection / part.
			Note: run diagnostics cycle after installing new owi to force calibration on next regular wash cycle.
		Drain hose check valve not seaung.	Dirty water backs into dishwasher after draining.
			1. Disconnect drain hose at plumbing connection.
			2. Elevate hose above dishwasher and fill with water. If water flows into dishwasher, replace entire drain loop (install as high as possible and attach to underside of countertop if possible).
4-wash motor	4-motor Failure	Loose connection in wash motor circuit and/or open wash motor.	1. Unplug dishwasher or disconnect power.
			2. Check all connections in wash motor circuit with meter, fix/replace open connection / part.
		Faulty wash motor drive circuit on the control
		Faulty wash motor
5-door Switch	1-door Stuck Open	Door was not latched within 3 seconds of pressing the start / resume key.	Instruct customer.
		Loose connection in door switch circuit and/or door switch contacts stuck open and / or door switch not making contact:	1. Check strike plate and door closure force. Verify door seal is seated properly. Check for interference between dish racks and door. Try bending strike plate down for better engagement.
		- faulty or sloppy door latch assembly (which can be aggravated by high door closure force keeping strike plate from fully seating).	2. Unplug dishwasher or disconnect power.
		- faulty door switch (high resistance).	3. Check door switch contacts and all connections in the door switch circuit with meter, while opening and closing the door latch.
			- if high resistance with door closed, check / fix loose connections.
			4. Measure resistance of door switch contacts while checking mechanical operation of latch assembly. Check for broken plastic pieces on latch assembly. Replace latch if faulty.
		Faulty control	1. With door open, verify 13 vdc present across p9-5 and p9-6.
			2. If no voltage present, unplug dishwasher or disconnect power and replace control.
	2-door Stuck Closed	Control programmed to not start if it suspects the door switch is stuck closed. Control looks for the door switch to open between cycles.	1. Open and close door and then press start/resume key. If works now, instruct customer to open door between cycles.
		- customer didn't open the door between cycles or door switch contacts stuck closed.	2. Unplug dishwasher or disconnect power.
			3. Measure resistance of door switch contacts while checking mechanical operation of latch assembly.
6-inlet Water	1-low/no Water (mechanical Problem)	No water to dishwasher.	Verify water supply is turned on and supply line adequate.
		Bowls or pots loaded or flipped upside down and captured wash water.	Instruct customer on loading.
		Drain loop detached from tub and/or improper drain connection.	Check for water siphoning out of unit:
			1. Allow dishwasher to complete normal fill.
			2. Drain for 5-10 seconds by pressing cancel/drain.
			3. Open door and confirm water does not siphon out of unit. If it does, confirm drain loop is attached to side of dishwasher and drain hose is connected to a drain at least 50.8 cm (20 inches) off the floor.
		Water leaking from dishwasher	Check for leaks under dishwasher.
6-inlet Water	6-cool Water	Incoming water under 18 c/65°f.	1. Be sure dishwasher is connected to the hot water supply.
			2. Confirm temperature at sink (recommended 49°c/120°f). Instruct customer to run water at sink before running dishwasher.
			3. Unplug dishwasher or disconnect power and check all connections and measure resistance in “temperature sensing circuit" replace owi if resistance high.
7-heating	1-no Heat	Control programmed to disable heater, but continue running cycles, if it detects a water heating problem.	Running diagnostics clears the control and allows the heater to turn on again, but must also correct the water heating problem or the control will disable the heater again.
		Heater circuit problem:	1. Unplug dishwasher or disconnect power.
		-open in heater.	2. Measure resistance of heater and all components and connections in water heating circuit/ heat dry circuit. Fix / replace open connection / part.
		- open connection or component in heater circuit.
		Faulty heater drive circuit on the control.	Unplug dishwasher or disconnect power and replace control.
	2-heater stuck on	Faulty heater drive circuit on the control.	1. Unplug dishwasher or disconnect power and replace control.
			2. Inspect heater and connections for overheating / shorting. If evidence of overheating or shorts exists, replace.
8-draining	1-slow Drain	Obstructed drain hose or path	1. Unplug dishwasher or disconnect power.
			2. Check for blockages from sump check valve to customer's plumbing. Potential items, plugged garbage disposer or plug not knocked out, drain loop check valve stuck, and/or plugged hoses.
		Drain pump impeller fractured or damaged	Unplug dishwasher or disconnect power and replace drain pump.
	4-drain Motor Electrical Problem	Loose connection in drain motor circuit and/or open drain motor winding.	Unplug dishwasher or disconnect power and check resistances of drain motor winding and all connections in the drain circuit. Fix / replace open connection / part.
		Faulty drain motor drive circuit on the control.
		Faulty drain motor