GE WD21X10494 | Dishwasher turbidity sensor assembly | Genuine OEM Part (Open box)

GE WD21X10494 | Dishwasher turbidity sensor assembly | Genuine OEM Part (Open box).

GE WD21X10494 Dishwasher Turbidity Sensor Assembly

Genuine OEM Smart Wash Water Turbidity and Temperature Sensor Assembly

Product Overview

The GE WD21X10494 is a genuine OEM dishwasher turbidity sensor assembly. Mounted securely underneath the main wash tub sump basin, this intelligent diagnostic component acts as the "eyes" of your dishwasher's Eco/Smart wash cycles. It utilizes an internal optical light emitter and receptor beam to measure the soil level (turbidity) of the circulating wash water. By testing how much light passes through the water versus how much is blocked by floating food particles and grease, it signals the main control board to dynamically adjust the cycle length, water temperature, and number of required rinses.

As an Authentic General Electric Factory Certified Replacement Component , this assembly also features an integrated thermistor to track real-time thermal changes. Replacing a failed turbidity module restores factory-calibrated energy efficiency, ensures flawless cleaning performance, and stops your machine from running wasteful, unnecessarily long cycles.

When to Replace the Turbidity Sensor Assembly

• Dishes Come Out Dirty or Filmy: The sensor's optical lens is scratched, clouded, or failed, causing it to transmit incorrect data to the control board. The dishwasher falsely assumes the water is clean and prematurely cuts the wash cycle short.
• Wash Cycles Run Exceptionally Long: The dishwasher gets stuck in a loop, washing for hours on end because a broken sensor continually reports that the water is dirty, refusing to let the program advance to the drying phase.
• Active Sensor Fault Error Codes: The digital control display panel flashes specific clean water sensor errors, or emits a warning beep chain, locking out the operation of certain specialized cycles.

Technical Specifications

• Part Number: WD21X10494 (Directly replaces or cross-references factory numbers 1811151, AP4980838, EAP3486384, PS3486384, PD00001229)
• Part Type: Optical Water Clarity Turbidity & NTC Temperature Sensor Assembly
• Features: Dual-function optical beam chamber, pre-fitted moisture-blocking rubber sealing gasket ring, and a molded low-voltage multi-pin wire harness snap-dock connector.
• Condition: Brand New, Genuine GE OEM Part
• Compatibility: Specially engineered for an extensive selection of modern built-in and undercounter dishwashers branded under General Electric (GE), Profile, Café, Hotpoint, and select Kenmore models.

Professional Installation & Cleaning Tips

Safety Note: SHOCK & WATER HAZARD. Fully isolate your dishwasher from house utilities before starting repairs. Pull the main appliance plug from the cabinet wall socket or trip the dedicated kitchen circuit breakers at your electrical service box. Turn off the inline hot water supply valve located beneath your kitchen sink. Pro Tip (The "False Alarm" Cleaning Trick): Before unboxing your new sensor, remove the old one and inspect its clear plastic optical lens tip. Frequently, a thick layer of hard-water lime scale, cloudy calcium film, or grease buildup forms a mask over the lens. This blocks the internal light beam, tricking the dishwasher into thinking the water is permanently filthy. Scrubbing the lens clean with a soft towel dipped in white vinegar can often fix the issue without installing a new part. Installation Hack: Access this component by unfastening the lower front toe-kick kickplate panels at the floor base of the dishwasher. The sensor twists or snaps directly into the lower plastic sump body housing. Unsnap the wire harness plug carefully by depressing its built-in plastic lock tab rather than pulling on the wires. Warning: The WD21X10494 sensor relies on its rubber O-ring seal to contain high-pressure wash water. Ensure the receptor socket rim inside the sump is completely clean and smooth. Lightly wetting the rubber O-ring with a drop of liquid rinse aid or fresh water will help it slide cleanly into the socket without pinching, twisting, or cutting. Insert the component firmly, lock its retention tab, attach the harness, and run a quick test rinse cycle to check for drips before refastening the outer base panels.

Specifications

• Type: Turbidity Sensor
• Suitable For: Dishwasher

Condition: Open box