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Customer Questions and Answers for Sensor (Assembly) by Frigidaire

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Manufacturer Part
4.89 (64)
By: Frigidaire
Part Number: OEM21053418
Manufacturer Part Number: A00040106

Replacement sensor assembly that detects appliance operating conditions and sends readings to the control system for proper operation. Installing a working sensor restores reliable feedback and helps resolve related error codes or inconsistent performance. What it does:

  • Detects operating conditions and provides electrical feedback to the appliance control.
  • Enables the control board to monitor and adjust cycles based on measured readings.
  • Faulty or intermittent sensors can cause incorrect readings, error codes, or unstable/incorrect appliance operation.
  • Replacing a failed sensor restores accurate sensing and helps return the appliance to normal function.
What's included: One sensor assembly. Install notes:
  • Always disconnect power to the appliance before starting work to avoid shock or injury.
  • Handle the sensor and wiring gently; avoid pulling on wires or bending sensor probes sharply.
  • Ensure connectors are fully seated and routed clear of moving parts or heat sources.
  • After installation, restore power and verify proper operation and that any previous error codes are cleared.

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Questions & Answers

For Frigidaire Sensor (Assembly) (Part Number: OEM21053418)

1 Answer

Ann, during the heated dry cycle, the heating element of the circulation motor 5304514365 would need to be tested for 120VAC from the brown wire to the blue wire. If there is voltage and the unit does not heat up, the motor assembly would need to be replaced.

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1 Answer

John, with the power supply to the dishwasher turned off, the heater of the pump assembly 5304514365 can be tested from the main control 5304533996. There will be a three wire connector housing a blue wire, a brown wire, and a green/yellow wire. The blue wire and the brown wire would be tested for resistance and should measure 16.9O. If the resistance is good, the heater and the thermostat in the harness 807556302 are good and the most likely failure would be the main control.

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Cv for Model Number FPID2497RF3A

This Frigidaire dishwasher FPID2497RF3A will not stop running on every wash selection (except RINSE) For the 30 minute wash (as an example) – The Pre-Wash cycle works fine. I start the washer, the drain pump turns ON (discharges the sump), the inlet valve opens, the circulation pump turns ON (for the prescribed of time) then turns OFF, the drain pump turns ON and discharges the sump. All seems normal at the start of the No.1 Main Wash cycle. The inlet valve opens, the circulation pump turns ON, and the heater turns ON. THEN… after the prescribed period of time (a) the dispenser OPENS (you hear the click) and (b) the circulation pump turns OFF (for maybe 10 seconds) and then turns back ON (for maybe 1 minutes). Then (a) and (b) repeat themselves perpetually until I CANCEL the wash selection entirely. Removing and cleaning the sump filter doesn't affect anything. The sump water is clean (I ran the washer several times with no dishes). Water temperature is hot. I have been selecting RINSE to complete my failed washes. The PreWash 1 and PreWash 2 cycles perform flawlessly. I received alarm codes i60 and ib0 when all this started to happen. I cleared those codes and removed power from the washer expecting to find the washer working fine or the doing the same thing with new/accurate alarm codes to work from. Unfortunately I have the same malfunctioning washer as described except I now see ONLY alarm code i00. What is broken?

1 Answer

CV, This issue would most likely be caused by a faulty turbidity sensor and if the sensor is good then the control board would be the issue.

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Charlie for Model Number AP5805765

This dishwasher will not stop running on every wash selection (with exception to RINSE selection). At the end of the selected wash the time meter will show 1 minute remaining and dishwasher will the do the following: (a) The wash cycle will run for maybe 1 minute and stops (b) when it stops the drain pump attempts to discharge waste water and then stops, and (a) and (b) repeat themselves into perceptuality. The dishes are clean. Removing and cleaning the sump filter doesn't affect this phenomena. The water in the sump is clean. The elapsed time meter is stuck on 1 minute and (a) and (b) continue until I CANCEL the wash entirely. I then select RINSE, which terminates properly after 15 minutes. Do I have a faulty turbidity sensor? I get a an ib0 error code (along with i60...i60 (heater) doesn't seem to be the issue.....or does it?) Would changing the turbidity sensor solve this problem?

1 Answer

Hello Charlie, this problem is unlikely to be caused by the turbidity sensor. If you would repost your question with the model number we will be able to locate the test info to help determine the cause.

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Ben T for Model Number FGID2474QF4B

Will replacing this sensor help clear the I20 error code? The error code in the manual only mentions the drains and the knockout plug. I have tried checking the drains and they are all clear. The knockout plug has long been gone, as the dishwasher has been going through a disposal for the last 2 years. https://washingcodes.com/frigidaire-dishwasher-error-code-i20/#.XFWTq1xKhPY The website linked above indicates that the "pressure sensor" could need replacing. They also call it a "pressure switch" but the video showing the repair steps doesn't look like the "switch" part linked here: https://www.appliancepartspros.com/frigidaire-switch-a00055406-ap5959207.html

1 Answer

Ben, The sensor A00040106 is a turbidity sensor and would not cause drain errors on the unit. If the unit is not draining then test to see if the drain pump is getting 120 vac it it. If there is 120 vac to the drain pump and it is not draining then the drain pump is faulty and needing replacement. if there is no power to the drain pup then the issue will be that the main control board is faulty and would need replaced. There is a pressure switch for this unit which would be part number A00055408. If the unit is draining the water out but getting the error code then this pressure switch would likely be the issue.

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