Frigidaire Dishwasher Error Codes: What They Mean and How to Fix Them

Dishwashers are a convenient and time-saving appliance that many households rely on for their daily routine. However, when an error code appears on a dishwasher, it can cause frustration and stress for the user.

Frigidaire dishwasher error codes are a common occurrence, and it’s important to understand what they mean and why they are important to know.

Here is a list of the most common Frigidaire dishwasher error codes:

  • PF—Power failure
  • HO—Heating failure
  • LO—Low rinse aid
  • UF—Vent fan not running
  • ER—Stuck keys
  • CE—Configuration error
  • CL—Door not closed properly
  • Dp—Drain pump error
  • FL—Water valve open
  • HS—Hall sensor error
  • RA—Rinse aid reed switch failure
  • RE or RT—Relay or triac error
  • SD—Detergent dispenser error
  • TU—Turbidity sensor error

Understanding Frigidaire dishwasher error codes is important because it can help users diagnose and fix the problem quickly. Ignoring the error code could lead to further damage to the dishwasher, resulting in expensive repairs or the need to replace the entire appliance.

Error Code PF

The most common error code that appears on Frigidaire dishwashers is PF, which stands for power failure. This error code indicates that the dishwasher is experiencing power issues, which can be caused by a 10% or more drop in power.

To solve this problem, users should first ensure that the voltage going into the dishwasher is sufficient for operation. If the voltage is adequate, a hard reset may be needed. This involves turning off the power to the dishwasher or pressing and holding the cancel button for five minutes to reset the unit.

If the error code persists, the dishwasher part may need to be troubleshot and possibly replaced, or a professional may need to be called to service the dishwasher.

Other Common Codes

Other Common Codes

While the PF code will most likely be the reason you visited this guide, it’s not the only code worth knowing. As you’re probably well-aware, dishwashers can experience a multitude of issues, ranging from temperature to water levels problems.

Here are a few more common error codes that are likely to appear on your Frigidaire dishwasher.


The HO error code on a Frigidaire dishwasher indicates that the water temperature is too low, and the heater is having trouble heating the water.

To resolve this error code, users can try running the hot water in the sink before starting the dishwasher, ensuring that the dishwasher’s water supply is hot enough to start the cycle.

Additionally, users should check the dishwasher’s heater and thermistor for any defects or damage that may be causing the error code.


The LO error code on a Frigidaire dishwasher means low rinse aid. This indicates that the rinse aid dispenser needs to be refilled so it can perform at its highest level.

To resolve this issue, refill the rinse aid dispenser with the appropriate product and make sure the dispenser cap is tightly closed. Run the dishwasher through a cycle to ensure the rinse aid is distributed properly.


The UO error code indicates a breakdown in the ventilation subsystem or mainboard. This error code is accompanied by a sound of several clicks and water draining, indicating that the fan of the device, which opens only after the cycle switches to dry mode, is open, and the system cannot start the washing.

To resolve the issue, reset the dishwasher by unplugging it from the power socket and pressing the start button continuously to put it off. If this does not work, inspect the dishwasher fan, valve, and sensor. Other possible causes of the error include malfunctioning wiring, faulty ventilation subsystem, or broken control module.


The UF error code on a Frigidaire dishwasher means that the control board is sensing that the vent fan motor is not running at the correct speed during the drying cycle.

resolve this issue, first check the vent assembly and the wiring between the vent assembly and the main control board. If there are no issues, replace the vent fan to get it running again. If the error code still exists, replace the main control board.


The ER code on a Frigidaire dishwasher refers to a “membrane switch failure” or “stuck keys”. The solution is to check the keys and replace the membrane switch if necessary.

Alternatively, you can try resetting the dishwasher by pressing the Start or Cancel button or turning off the circuit breaker for 10 minutes.


The CE error code on a Frigidaire dishwasher indicates a configuration error.

To resolve this error, you can try checking the wiring connections between the main control panel and the keypad. You can also try pressing and holding the cancel button or turning off the power supply to the dishwasher for 5 minutes to clear the error code.


The CL error code on a Frigidaire dishwasher indicates that the door is not properly closed or the door switch is open. The dishwasher will not start until the door is secured.

To resolve the issue, ensure that the door is properly closed and latched. Check all door switches to ensure that they are not broken or damaged, and confirm the connection between the door switches and the main control board.


The Frigidaire dishwasher error code Dp means that there is a problem with the drain pump. This error code usually appears during a relay test when the drain pump is activated.

To resolve this issue, you need to check the drain pump for any clogs or obstructions, and ensure it is functioning properly. If you find any issues, you can either repair or replace the drain pump as needed. You can also try resetting the dishwasher by holding down the cancel button for at least 3 seconds.


The FL error code on a Frigidaire dishwasher means “water valve open”. This error code is often seen during a relay test, indicating that the water valve is activated during the test.

To resolve the FL error code, it is recommended to check the dishwasher’s water supply line and water pressure and supply. Additionally, make sure that the dishwasher is not leaking water onto the floor after use.


The Frigidaire dishwasher may display the HS error code, indicating a Hall Sensor Error. This means that there is an issue with the motor, and the wiring between the motor and the main control board should be checked.

If the wiring is correct, the motor may need to be replaced.


The RA error code on a Frigidaire dishwasher refers to a rinse aid reed switch failure. Possible causes of the RA error code include a defective detergent dispenser or a defective main PCB, or a wiring issue between the detergent dispenser and the main PCB.

To resolve this issue, the first step is to refill the rinse aid dispenser and see if the error code goes away. If necessary, replace the dispenser assembly.

RE or RT

The Frigidaire dishwasher error code RE or RT indicates a problem with the relay or triac. Error code RT shows up when the dishwasher is in relay test mode, while error code RE appears during a triac test mode.

To resolve these issues, first, try resetting the dishwasher by holding down the cancel button for at least three seconds or turning off the power to the dishwasher for 5 minutes.


The Frigidaire dishwasher error code SD stands for “detergent dispenser” and appears when the dishwasher is in relay test mode and the detergent dispenser has been activated.

The solution for this error code is to reset the dishwasher. To reset the Frigidaire dishwasher, first, press the Start or Cancel button. If this method does not work, unplug the dishwasher from the power source or turn off its circuit breaker and let it rest for about 10 minutes.


TU is a common error code on Frigidaire dishwashers that indicates a problem with the turbidity sensor. This sensor measures the amount of soil in the water and helps to determine the appropriate wash cycle.

To resolve the TU error code, start by checking the wiring connections for the turbidity sensor and the main control board. If the wiring is correct and the error persists, then the turbidity sensor may need to be replaced. In some cases, the main control board may need to be replaced as well.

i10, i20, i30, i40, and iF0

Error codes i10, i20, i30, i40, and iF0 are common error codes found in Frigidaire dishwashers. These error codes relate to drainage and water flow issues.

Error code i10 indicates a low fill has been detected, meaning there is not enough water in the dishwasher, and it is necessary to check the water supply line for any kinks or blockages.

Error codes i20, i40, and iF0 suggest that the drain line is restricted or the filters are clogged, and the drain hose should be checked for blockages or kinks, and the filters cleaned.

Error code i30 indicates a problem with the drain, which may require checking the sewage system, examining the hose for blockages or folding, and cleaning the filters.

How to Reset a Frigidaire Dishwasher

As you may have noticed in this guide, resetting your dishwasher is the simplest way to clear several error codes. If you’d like a detailed description of how to do this, you can check out my guide here.

For those that are short on time, here’s the 4-step process to reset your Frigidaire dishwasher:

  1. Turn the dishwasher on
  2. Press and hold the cancel button for 5 seconds
  3. Wait for 5 to 10 minutes

Press and hold the start button for 2 to 3 seconds

Resetting the dishwasher will clear any previously input commands. This can help resolve many issues associated with the control board or temperature problems.

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