ge dishwasher h20 error

Wondering how to fix this GE dishwasher H20 error code? We got you covered!

Although GE dishwashers are highly reliable, their error codes, such as H20, occasionally frustrate homeowners. 

If this error is appearing in your dishwasher, don’t panic.

We will guide you on how you can easily fix this error without calling a professional.

The “H20” error on a GE Dishwasher usually appears whenever there is insufficient water supply. The error also appears due to low water pressure, a blocked hose, a broken inlet valve, a malfunctioning float switch, or a faulty control board. The solution is easy!

Let’s learn how you can quickly resolve your GE Dishwasher H20 code:

H20 Error Code GE Dishwasher? – Ultimate Fix Guide

fix  ge dishwasher h20 error

If your GE Dishwasher is showing you an H20 error code, this means that it is not getting water, which might be caused by any malfunctioning components. 

Don’t worry, you can easily find that defective component by following our guide, but first, ensure to follow the exact steps!


Your dishwasher may occasionally run out of water even when no specific component is at fault.

There are several factors that prohibit the dishwasher from receiving a sufficient water supply to operate as intended. 

Here are most of the possibilities:

  • The main water valve is turned OFF or halfway opened
  • Your house plumbing work is just completed
  • You are using the unit for the first time
  • The water hose is disconnected from the Valve

In case you’re unsure of where to begin, follow the solutions below!

Solution #1 Do A Water Pressure Test

do water pressure test

Due to the low water pressure, the dishwasher often receives an insufficient water supply.

The low water pressure prevents the machine from filling in a timely manner and causes it to assume there is not enough water.

This is where the H20 error mainly appears!

Note: Make sure you have a pressure gauge before taking the test!

This is how to test the water pressure of your home: 

  1. Make sure to turn off all of your home taps.
  2. Next, open the kitchen tap fully and connect the tap with a Pressure Gauge.
  3. Wait for a few seconds and then check the water pressure.
Note: Remember that 50 to 60 psi of water pressure is ideal for running a dishwasher!

Solution #2 Check Inlet Valve

check the inlet valve

The primary element that assists your dishwasher in receiving water is the machine’s inlet valve. 

Occasionally it becomes blocked or loses its functionality over time, failing to adequately supply water to the dishwasher. 

  • The valve can only be replaced and can’t be fixed!

This is how to check the dishwasher inlet valve:

  1. Open the dishwasher’s Lower Panel by unscrewing it.
  2. Next, open the machine’s door and undo the screws.
  3. Separate the outdoor panel and place it aside.
  4. Stop the water supply line, using the main valve.
  5. Remove the brass elbow and unscrew the inlet valve.
  6. Disconnect the wire harness as well
  7. Use a plier to remove the clamp.
  8. Remove the inlet valve from the unit.
  9. Unclogged it and carefully look for any fault.
  10. Set up a new inlet valve if the previous one is faulty.
  11. Connect the fill tube with the valve.
  12. Fix the valve in the dishwasher base by fixing the screws.
  13. Use Teflon to wrap around the bass elbow!

Before closing the Lower Access Panel, we recommend you clean and unclog the water hose pipe because maybe the pipe is the cause of the issue!

Solution #3 Clean The Water Hose

clean the water hose

The dishwasher hose will eventually jam up and become unable to properly supply water. 

After looking over the inlet valve, your next step is to examine the hose because it might be completely blocked or leaking.

If so, you’ll need to replace the hose, which isn’t expensive!

Note: Make sure you have followed the above steps to access the water hose and valve!

This is how to unclog or replace the dishwasher water hose:

change the water hose
  1. First, unscrew the Junction Box from the lower panel and take out its bracket.
  2. Next untwist the wires of the junction box and then release the strain relief.
  3. Disconnect the Water Hose from the sink or garbage disposer 
  4. Unscrew the dishwasher mounting screws and adjust the unit legs to lower it down.
  5. Carefully pull out your unit from the cabinet.
  6. Unthread the hose pipe from the Drain Pump.
  7. Run warm water from a hose to soften down any clogged debris.
  8. Also, use a brush to clean the dirt, and finally run water to remove dirt from the hose.
  9. Don’t forget to carefully check for hose breakage.
  10. Replace your hose or connect the previous one to the pump.

When you’re ready, reassemble everything by following the steps in reverse.

When you turn on the machine, the GE Dishwasher H20 error should be gone, otherwise, keep reading!

Alert: Be gentle when connecting the water hose to prevent damaging the component.

Solution #4 Replace Pressure Switch

replace power pressure switch

The next component you need to pay attention to is the dishwasher Pressure Switch

The unit’s pressure switch measures the water it contains, but it’s possible that it’s defective, which would prevent it from determining the proper water level. 

You only need to replace the switch in your GE Dishwasher to permanently solve error H20.

Here’s how to replace the dishwasher pressure switch:

  1. Stop the power and water supply! 
  2. Disconnect the hose from the sink or garbage disposer and feed it from the cabinet.
  3. Next, unscrew the lower access panel and place the bracket aside.
  4. Use the plier to disconnect the water pipe fitting from the inlet valve.
  5. Unscrew the Junction Box cover and untwist the wires! 
  6. Release the strain relief using a flathead screwdriver.
  7. Next, unscrew the dishwasher mounting screws, then lower its legs. 
  8. Take out the unit from the cabinet.
  9. Then lay down the unit on its back.
  10. Remove the wire harness from the Pressure Switch.
  11. Rotate counterclockwise to pull it out from the unit.

Now, you’re ready to install a new pressure switch and connect everything back by following the order of disconnecting them.

In case of error H20 continues to appear, proceed further in the guide!

Solution #5 Inspect Float Switch

inspect the floater switch

The GE dishwasher’s Float Switch, is often used to control the water level and, as a result, stop the valve. 

Your dishwasher’s float switch may be faulty, which prevents it from determining the water level and restricts the inlet valve from filling the unit with water.

Here’s how to check the dishwasher’s float switch:

  1. Make sure to switch off the power and water supply.
  2. Open the machine’s door and remove the outdoor panel screws.
  3. Carefully separate the outer panel and place it aside.
  4. Remove the lower panel screws!
  5. Remove the Float Switch inside the tank using Philip’s screwdriver.
  6. Remove the cables from the switch and test it using a Multimeter to test for continuity.
  7. No continuity of the switch, replace the float switch.
  8. Reassemble everything accordingly.
Alert: Make sure to perform several tests with the multimeter before drawing conclusions!

Solution #6 Reset GE Dishwasher

reset the dishwasher

If you’ve tried all the above fixes but the H20 error on GE Dishwasher is still there, it’s possible that the control panel is malfunctioning. 

The GE dishwasher system can occasionally experience a malfunction or act erroneously because of incorrect settings resulting in an H20 error. 

How To Reset Bosch Dishwasher?

  1. Turn on the dishwasher power and water supply.
  2. Press and hold the Start or Reset button from the dishwasher control panel.
  3. Hold the button for about 5 seconds.
  4. Release the button by closing the dishwasher door simultaneously.
  5. A beep or pump moving sound will be the indication that the unit is ready to reset
  6. Next, press and hold the Rinse Button for about 5 seconds.
  7. To initialize the reset process, tap on the Rinse button again.
Note: The machine would need approximately 3 minutes to reset so be patient.

Fast Recap:

Hence, when your GE Dishwasher shows an H20 error on the unit panel, you first need to ensure that the home taps are off, so it can get proper water pressure. Meanwhile, check the Water Hose, Inlet Valve, Pressure Switch, and Float Switch to replace the faulty one!

Final Thoughts:

Here, we have discussed the GE dishwasher H20 error. We’ve learned that the problem could be caused by several different components and by inspecting them all we can determine the reason.

We wish this guide is enough to solve the error all the best.

For more GE and other brands’ dishwasher error codes and faults, check our blog!

Nicole B