KitchenAid dishwasher error codes: most of them end at the valve under the sink, the drain hose, or the heater.

The control opened the water valve and the tub never reached the level it expected in the time allowed. The water is not arriving, or it is arriving too slowly to count.

1. The small valve under the sink on the hot line that feeds the dishwasher is turned fully open; after plumbing work it is often left a half turn open.
2. Hot water runs at the kitchen faucet with normal pressure — a dishwasher drinks from the hot line, and a closed valve at the water heater or a slow well pump starves it.
3. The float at the front of the tub floor (a small plastic dome) lifts and drops freely; a bit of glass or a fork tine under it holds it up and the valve never opens.
4. Reset and start Rinse Only; stand by the sink and listen for water in the first minute.

Open the valve, free the float, and the next cycle fills. Water at the valve, a free float and still no fill is the water inlet valve itself — a part at the front left behind the kick panel, and on a machine under warranty a warranty service call.

The control read an electrical fault in the fill valve's coil or its wiring — this one is the valve, not the water supply.

1. Breaker off for one minute, on again, and start Rinse Only.
2. If the code shows again inside the first minute, there is nothing further to check at home — the valve sits behind the lower kick panel and its wiring runs under the tub.

F6E2 that comes back is the water inlet valve or its harness — a technician's part. A dishwasher with no fill cannot run a cycle until it is changed.

The wash pump found foam or air where it expected water. Too much detergent, the wrong detergent, or a fill that stopped short.

1. The detergent is a dishwasher detergent, measured to the cup's line — a squirt of dish soap, or a pod on top of a dose of powder, fills the tub with foam.
2. The rinse-aid cap is screwed on; a cap left off dumps the whole reservoir in one cycle and foams every wash after it.
3. Open the door mid-cycle: foam to the door seal is suds; a dry tub with the pump groaning is a short fill, which is F6E1's checks.
4. Breaker off one minute, then run Rinse Only with nothing added to clear the foam.

Rinse the foam out with an empty Rinse Only, use the right detergent at the right dose, and the code stays gone. F6E3 on a clean fill with the right detergent is a wash pump losing its prime — a technician's look.

The float in the tub floor rose and tripped its switch. Either the valve kept filling past the line, or the float is stuck in the up position.

1. Press the float dome down with a finger and let it go — it should drop and click. Clear whatever is wedged under it.
2. Is the tub really full? Water standing above the float with the dishwasher off means the fill valve is not closing — close the supply valve under the sink now.
3. Reset and run Rinse Only, watching the water line through the first fill.

A freed float and a normal fill clear it. Water that keeps rising with the dishwasher off is the inlet valve — a part; a float that reads tripped with the tub dry is the float switch — also a part.

The small meter that counts the water coming in reported nothing while the valve was open — so the control cannot tell how much water went in.

1. The supply valve under the sink is open and the kitchen faucet runs with normal pressure; a trickle spins the meter too slowly to count.
2. Breaker off one minute and run Rinse Only; listen for the fill.

A good supply and a code that returns is the flow meter (it sits on the fill line behind the kick panel) or its wiring — a technician's part; the dishwasher falls back to a timed fill meanwhile on most models.

The drain pump ran for its allowed time and the water in the sump did not leave. Something between the sump and the sink is holding it.

1. A dishwasher or a disposal installed inside the last few weeks: the knockout plug in the disposal's dishwasher inlet is still in place. It is punched out from inside the disposal with a screwdriver and a tap of a hammer.
2. The drain hose climbs to a high loop under the counter (or an air gap on the sink deck) before it drops to the disposal — a hose lying on the cabinet floor backs the tub up.
3. The disposal is empty and runs; a disposal packed with peels backs water into the dishwasher.
4. The filter in the tub floor — twist the upper cup out and lift the fine screen — is clean, and the sump under it holds no rice, labels or glass.

Punch the knockout, loop the hose, clear the disposal and the filter, then press Cancel to drain. A dishwasher that drains clean into an empty sink and still prints F8E1 has a drain pump wearing out — a part.

The control drove the drain pump and read an electrical fault — an open winding, or an impeller jammed so hard the motor could not turn.

1. Lift the filter cup and the fine screen out of the tub floor and look into the sump for glass, a toothpick or a fruit pit against the pump's impeller at the bottom; turn the impeller with a finger — it should spin with light resistance.
2. Breaker off one minute, then hold Cancel to drain; listen for the pump's hum.

A jammed impeller cleared by hand runs again. A free impeller with a silent pump, or a hum and no water moving, is the drain pump — a part replaced from under the tub.

The control switched the heater on and the water temperature never climbed. Dishes come out wet and cool, and ProDry and Sani Rinse never finish.

1. Breaker off one minute, then run Normal with Heated Dry or ProDry on; at the end, feel the inner door — warm means the heater worked and the code was a one-off.
2. The hot water at the sink is hot; a dishwasher that fills with cold water asks the heater for more than it can give and times out.

A heater that never warms is the element under the tub floor or its relay on the control — a technician's part. Run Normal without the heated options meanwhile and towel the dishes.

The control found the heater's relay closed when it should be open — the heater can run when nothing asked it to.

1. Breaker off. If the tub was hot with no cycle running, leave the breaker off.

A relay stuck on is the control board — a technician's part. This one is not run around: a heater on in a dry tub is a burn hazard.

The main control lost communication with the wash pump motor, or the motor did not run when it was driven.

1. Pull the lower rack and lift the filter; look for a shard of glass or a bone in the sump that could have locked the wash impeller.
2. Breaker off five minutes, on again, start Normal and listen for the wash pump through the first minutes.

A clear sump and a code that returns is the wash pump motor, its control, or the harness — a technician's part.

The diverter under the sump turns the water between the lower arm, the middle arm and the third-rack spray; the control moved it and could not find the position it asked for.

1. Pull the lower rack, lift the lower spray arm off its hub, and clear food or a label from the diverter cap in the center of the sump; rinse it and set the arm back.
2. Breaker off one minute and run Normal; the upper racks come out clean when the diverter is turning.

A clear diverter that still prints F9E1 is the diverter motor or its position switch under the tub — a technician's part; the lower rack still washes meanwhile on most models.

The diverter motor's relay is closed when it should be open, so the motor is being driven when it should rest.

1. Breaker off five minutes, on again, run Rinse Only.

F9E2 that returns is the control board — a technician's part.

The control found one of the relays on its own board stuck closed — it can keep a pump, the valve or the heater powered when the cycle says off.

1. Breaker off five minutes, on again, start Rinse Only. If anything runs with the dishwasher idle, switch the breaker back off and leave it.

F1E1 that returns is the main control board — a technician's part. A stuck relay is never a wait-and-see.