Frigidaire dishwasher code 30 [Quick Fix]

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Frigidaire dishwasher code 30: What does it mean? What causes it? How can I fix it?

These are among the questions that we shall be answering in this Frigidaire dishwasher troubleshooting guide.

Something else: I must mention that this error code (i30) is similar to i20 and i40.

That being so, if your Frigidaire dishwasher is displaying any of the above error codes, you can also try the following troubleshooting steps. 

Frigidaire dishwasher code 30 (error code i30) – meaning, causes, and how to fix it

What the i30 fault code means

The i30 fault code signals that your dishwasher is detecting flooding in the tray area.


This might be due to water or foam flooding in this area or a faulty part that is preventing proper drainage.

Possible causes of Frigidaire dishwasher code i30

  • Dirty filters or faulty drain pump: And this might be preventing the waste water from flowing out of the dishwasher. In other words, the water that should drain will remain sitting in the tub area hence the i30 error code.
  • Faulty water inlet valve: Sometimes, the inlet valve will not close fully which results in water continuously flowing into the dishwasher even when it is not running. And, this might result in water overflowing inside the tray area.
  • Using excessive (or the wrong) detergent: This will likely result in your dishwasher forming excess suds. When these suds flow into the tray area, they might trigger the pressure sensor to sense the dishwasher to be flooded.
  • Water leakage: This typically occurs when water is leaking from the base pan into the tray area. This, in turn, activates the dishwasher’s Styrofoam float which ends up triggering the anti-flooding sensor.
  • Rodents might be living in the tray area: This is the most possible cause if you have not used your dishwasher for some time. You see, rodents might push/trip the float switch resulting in your dishwasher displaying the i30 error code. Other than that, the rodents might defecate inside the tray area which the dishwasher might confuse for flooding.
  • Dirty/bad pressure sensor hence it won’t detect the correct water level – it might detect the dishwasher to be flooded even if it is not. This will result in the sensor sending the wrong signal to the control board hence the error code you are seeing.

Quick tip: A bad/dirty pressure sensor is the most common cause of the i30 error code in Frigidaire dishwashers.

  • Control board problem: Other times, your dishwasher might be acting up due to a glitch in the control board.

Frigidaire dishwasher code 30 reset – how to fix the i30 error code in Frigidaire dishwashers

Start by…

Hard resetting the dishwasher

This helps clear the code if the problem was due to the control board acting up.

To hard reset your dishwasher, trip the circuit breaker and let the dishwasher sit for 5 minutes without power.

Remove water and foam from the tray area and also clean the area

Oftentimes, the i30 error code is usually due to a flooded tray area.

So, pull out your dishwasher and tilt it at an angle of 45⁰ to allow the excess water to flow out.

Alternatively, you can use a wet vac to vacuum out all the water that might be in there.

Once you remove all the water, use a dry towel to wipe the base of the tray before re-inserting and testing the dishwasher.

Something else: If you note that the tub area is overly sudsy, you can run one or two rinse cycles to get rid of the residue detergent.

If this is the case, next time remember to use the right amount of a dishwasher-safe detergent.

Finally, cleaning the tub area also helps to get rid of any rodent droppings that might be in the tub area.

Quick tip: Oftentimes, removing water from the tub area is usually a temporary fix as this only gets rid of the water and not the cause of the water flowing into this area. As such, if this procedure resets the error code, I would advise you to try the other steps below so as to fix the primary cause of the water flowing into the tub area.

Check for water leakage and clean the filter(s) & drain pump

Cleaning the filters and the drain pump helps the dishwasher to drain waste water easily thereby preventing any possible backflow that might occur.

While still in there, also remove any clogs and straighten out any kinks that might be along the drain hose.

Finally, confirm that the water inlet valve is closing fully… If the valve is leaking, my advice is that you replace it – it’s much cheaper plus it offers a long-term solution.

The good news is you can order an original replacement valve on online marketplaces such as Amazon (it’s not an expensive repair- see current prices on Amazon).

Clean/replace the pressure sensor

If all the above do not work, odds are that the pressure sensor is dirty/bad.

So, start by gently wiping the sensor using a warm moist piece of cloth.

If this does not clear the error code, proceed to install a new replacement sensor (view prices on Amazon) in place of  the old sensor… Your dishwasher should work like a charm after you pull your dishwasher out and finish attaching the new pressure sensor and tube.


Frigidaire dishwasher code 30 – parting words

Other than a faulty inlet valve, there are other internal parts that might result in leaking. These can be parts such as internal hoses or a worn-out wash tub.

So, be sure to inspect these other parts for possible leakages too.


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