KitchenAid Dishwasher H2O Error Code

No water detected on KitchenAid dishwashers.

KitchenAid All KitchenAid dishwasher codes

H2O

Easy DIY fix

The dishwasher tried to fill and didn't sense any water. Nine times out of ten the supply valve is shut or the supply hose is kinked.

Compatible models

Seen on KitchenAid dishwashers with a display; KitchenAid doesn't list specific models.

Also shown as

KitchenAid's error-code guide prints it as H20; it's the same message.

Difficulty

Most people can clear this one at home with simple checks.

How to fix
When to call a pro
Parts
FAQ

Not sure you are reading the code right? See how to read KitchenAid dishwasher codes.

Safety first: unplug the dishwasher (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix KitchenAid H2O

Open the water supply
Check the shutoff valve under the sink and turn it fully open. If someone worked on the plumbing recently, this is the first suspect.
Straighten the supply hose
Look behind the toe kick and under the sink for a kinked or pinched supply line. Unplug the dishwasher or switch off its breaker before you reach in near the base.
Press Start
With water restored, press Start. The dishwasher should try to fill again and carry on with the cycle.

When to call a technician

If water is on and the hose is clear but H2O keeps appearing, the inlet valve or fill sensing may be faulty and a technician should check it.

Parts linked to H2O

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

Order parts by your full model number so they fit.

Step-by-step guides for this problem

DishwasherTroubleshootingDishwasher Won't Start? Latch, Lock, Delay and Power Checks
When a dishwasher won't start, the door usually isn't latched, the control lock is on, or a delay start timer is counting down.
4 min readRead guide

Frequently asked questions

Which KitchenAid models show the H2O code?

Seen on KitchenAid dishwashers with a display; KitchenAid doesn't list specific models.

Can I fix KitchenAid H2O myself?

Usually, yes. Most H2O problems clear with simple checks you can do at home. Start with the first step above: open the water supply.

Other KitchenAid dishwasher codes

Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.

Sources we checked