Frigidaire Dishwasher Error Codes – Meaning & Fixes

Frigidaire dishwasher stands out as an indispensable kitchen companion, ensuring sparkling clean dishes with minimal effort, but it sometimes throws different error codes from time to time that prevent you from using it. 

Some common Frigidaire dishwasher error codes you may see while using it are:

  • PF 
  • HO
  • CE
  • LO
  • Dp
  • ER
  • SD
  • UO
  • UF
  • iF0, i10, i20, i30, i40, and i50
  • CL
  • RA
  • TU
  • FL
  • HS
  • RT/RE

To help you with troubleshooting, we’ll list down some Frigidaire dishwasher error codes and provide easy-to-follow instructions to resolve them. 

What Are Some Error Codes On Frigidaire Dishwasher?

Frigidaire Dishwasher error codes meaning

Some errors you might experience on your Frigidaire dishwasher are PF for power supply failure, HO when the heating element is faulty, and the LO code if the appliance has low rinse aid. 

Below, we’ve listed some of the common Frigidaire dishwasher error codes you might see while washing using the appliance in your kitchen: 

PF Error (Power Failure)

PF is the most common error code that indicates power failure on your Frigidaire dishwasher and is usually caused by:

  • 10 % drop in voltage or unusual power outages. 
  • Loose power connection. 
  • Faulty door system. 
  • Bad water heating system (Also a probable cause for error i60) or element. 
  • Leaking water pump or faulty drain pumps. 
  • Damaged control board.

HO Error (Water Heating Issues)

Frigidaire dishwasher uses hot water to clean the dishes thoroughly. However, if it detects the water temperature is too low or the heater cannot heat it, the dishwasher displays the HO or Hd error code when washing the dishes.

CE Error (Communication or Configuration Issues)

The Frigidaire dishwasher shows the CE error code when the control board is faulty due to a wiring problem, which leads to a communication or configuration issue. 

LO Error (Faulty Control Board or Rinse Aid Issue)

The LO error message pops up on your Frigidaire dishwasher if it receives inadequate voltage (below 110 volts) due to a failed control board or it is running low on rinse aid for cleaning the dishes. 

Dp Error (Drain Pump Problem)

The Dp error on your dishwasher displays in the relay test and indicates a problem with the drain pump. 

SD Error (Detergent Dispenser Problem)

Like the Dp error, the SD code appears in the relay test mode on your Frigidaire dishwasher and shows that the “detergent dispenser” is activated. 

ER Error (Stuck or Pressed Keys Problem)

If your Frigidaire dishwasher throws the ER error, its touch control panel or membrane switch might be shorting out due to a stuck or pressed key.

UO Error (Vent Open Issue)

The UO error on your Frigidaire dishwasher means “Vent Open,” which happens if the main control is not receiving signals from the vent assembly due to the failure of the ventilation subunit or mainboard.  

UO Error (Vent Open Issue)

UF Error (Vent Fan Issue)

The UF error indicates that the vent motor on your Frigidaire dishwasher is not running at the right speed during the drying cycle. It is also possible that the vent is clogged, resulting in the error message. 

CL Error (Door Not Latched Correctly)

CL is a simple error code that shows on your Frigidaire dishwasher if its door is not latched or the switch is malfunctioning. This prevents your dishwasher from turning on till you close the door correctly.  

RA Error (Failure of Rinse Aid Reed Switch)

The RA error code on your Frigidaire dishwasher points to the problem with the rinse aid reed switch due to a malfunctioning detergent dispenser, faulty main PCB, or a wiring issue between the PCB and the main detergent dispenser.

TU Error (Problem with Turbidity Sensor)

Another common error on Frigidaire dishwashers is the TU code, which typically indicates a problem with the turbidity sensor that measures the level of dirt in the water and assists in determining the appropriate wash cycle for your dishes. 

FL Error (Open Water Valve)

FL error code on Frigidaire dishwasher means the “Water valve” that controls water flow into the appliance is activated during the relay test.

iF0, i10, i20, i30, i40, and i50 (Drainage and Water Supply Issue)

Due to a blocked drainage system or clogged filters, you’ll usually see iF0, i20, or i40 errors on a Frigidaire dishwasher. The i10 error means the appliance has insufficient water due to an issue with the supply system. 

On the other hand, if water leaks into your dishwasher’s bottom pan, its cycle will be interrupted, and the appliance will display the i30 or i50 error code to point to the drain problem.

HS Error (Problem With Hall Sensor)

When your Frigidaire dishwasher flashes the HS error code, it signals a problem related to the Hall Sensor. This error means the motor and the main control board wiring are either faulty or loose. 

RE/RT Error (Issue With Traic Or Relay Test Mode)

The RE and RT errors indicate issues related to the triac test mode or relay test mode of your Frigidaire dishwasher, respectively. 

How Do I Get Rid Of The Error Code On My Frigidaire Dishwasher?

How Do I Get Rid Of The Error Code On My Frigidaire Dishwasher

To get rid of the error codes on your Frigidaire dishwasher, first troubleshoot the power supply issues, and then run hot water in the sink before the wash cycle to ensure the right temperature. Also, add more rinse aid in the dispenser and close the cap correctly. If this doesn’t help, check the control board, drain pump, and heating system and replace them if needed. 

Below, we’ll discuss the step-by-step methods to get rid of the 16 Frigidaire dishwasher error codes as soon as possible. 

Troubleshoot Power issues

To fix the Frigidaire dishwasher is displaying the PF code, do these steps: 

  • For general power outage issues, press the “Start/Cancel” button on the dishwasher and hold it for 3 seconds to soft reset it. 
  • Plug the dishwasher directly into the wall outlet instead of an extension board to ensure sufficient power supply. 
  • Replace or change the circuit breaker if the power drop is caused by overload. 
  • Check the connection between your dishwasher and wall outlet for a firm connection.
  • Inspect the door switch using a multimeter and replace it if damaged. 
  • Check and replace the water heating system, drain pump connector, or control panel if even one of them is not getting power. 

Run Hot Water in the Sink

To resolve the HO error code on your Frigidaire dishwasher, simply run hot water in the sink to remove the cold water before starting it. This will ensure the appliance gets the water at the right temperature while washing and cleaning the dishes. 

You can also check the thermistor and heating element and replace them in case of any defect or damage to fix the HO error code. 

Check Wiring Connection

For the CE, RA, HS, and TU error codes, you need to check the wiring connection between:

  • The control panel and keypad.
  • PCB and main detergent dispenser.
  • Motor and main control board. 
  • Turbidity sensor and main control board.

If these wirings are defective, consult a technician to diagnose and replace them. 

Suppose this does not fix the CE error; press and hold the Cancel button to turn off the power supply to the dishwasher for 5 minutes. In case of an RA, HS, or TU error, you may need to replace the detergent dispenser, motor, or main control board, respectively. 

Change the Control Board or Add More Rinse Aid

To fix the LO error code on your Frigidaire dishwasher, check the rinse aid in your Frigidaire dishwasher and refill the product with the appropriate amount. Also, ensure the dispenser cap is closed tightly.

If the error persists, use a multimeter to get the reading of the control board. If it’s below 110 volts, replace the whole part. 

Check the Drain Pump

Test the drain pump when your Frigidaire dishwasher shows the Dp error and remove any obstructions or clogs. 

If this doesn’t help, soft reset the dishwasher. To do this, press the “Cancel” button for 3 seconds to reset it, or take the appliance to a repair shop that can diagnose and repair the issue.  

TIP: Soft resetting the dishwasher can also help you fix the SD, RT, and RE errors, or try disconnecting the appliance from the wall outlet for 10 minutes.

Check the Keys on Control Panel

To address the ER error on your Frigidaire dishwasher, examine the keys on its control panel to see if they are stuck. If not, unplug the dishwasher from the power source for 10 minutes. While at it, inspect the wiring between the keypad and the main control board and replace it if necessary. 

Inspect the Dishwasher

The solution to resolve the UO error on your Frigidaire dishwasher is to soft reset it with the above method or inspect the dishwasher fan, valve, sensor, and the wiring connection between the vent assembly and main control board.

If any of these components are defective or damaged, replacing them will most likely resolve the problem. Also, inspect and change the main control board to troubleshoot the error.

Check the Door

Since the door switch plays an important role in displaying the error CL on your Frigidaire dishwasher, open it and check for any object preventing it from closing correctly. 

Do examine the wiring connection between the door switch and the main control board for any damage and repair or replace it. 

Checking Frigidaire dishwasher door switch

Check Water Supply

To fix the FL error code on your Frigidaire dishwasher, examine its supply line and pressure to ensure the water flow is uninterrupted and at the required levels. This solution will also help you troubleshoot the i10 error on the dishwasher.

Also, inspect the dishwasher and make sure the water is not leaking after washing the dishes.

Check Drainage and Sewage System

Check the drainage system on your Frigidaire dishwasher if you are experiencing the i20, i40, or iF0 error codes, and ensure the filters are clean and the drain hose is not clogged or blocked due to debris or other obstructions.

For troubleshooting the i30 and i50 codes, examine the sewage system and clean or unfold its hose for proper dirty water flow. 


In this detailed guide, we’ve discussed 16 Frigidaire dishwasher error codes and explained different methods to resolve them quickly.

Remember to consult your Frigidaire dishwasher’s user manual for specific instructions, and always prioritize safety when troubleshooting or performing maintenance on your appliance.

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I am a kitchen appliances expert with years of experience on my back, which motivated me to share insightful tips with people who face issues while cooking, defrosting, melting, or reheating their food. I’m also a food enthusiast and spend my free time traveling the country, trying out the best recipes, reviewing cookware products, and sharing my experiences with others.