GE Dishwasher Float Sensor Replacement: A Step-by-Step Guide

Updated at: 23/05/2025

GE dishwashers are known for their reliability, but like all appliances, they eventually require maintenance. One common issue that can disrupt the efficient cleaning cycle is a malfunctioning float sensor. This crucial component monitors the water level, preventing overflows and ensuring proper operation. A faulty float sensor can lead to various problems, including the dishwasher not filling with water, failing to drain, or even running excessively long cycles. Identifying a bad float sensor can save you time, money, and frustration in the long run, compared to unnecessarily calling a repair technician.

Fortunately, replacing a GE dishwasher float sensor is a manageable DIY repair for many homeowners with basic handyperson skills. This task often requires minimal specialized tools, and the cost of replacement parts is relatively low. To guide you through the process, we've prepared a comprehensive, step-by-step guide, complete with clear instructions and helpful images to assist you. Let's get started!

Preparation and Safety Guidelines

Tools Needed
  • Phillips head screwdriver
  • Quarter-inch screwdriver
Safety Guidelines
  • Always disconnect the power supply to the dishwasher before starting any repairs. Failure to do so could result in electric shock.
  • Use caution when handling water inside the dishwasher, as it may be hot or contain residual cleaning solution. Wear appropriate protective gear if needed.
  • Ensure you have the correct replacement float switch for your specific GE dishwasher model. Using the wrong part could lead to further issues or damage.

Step-by-Step Instructions

  1. Preparation

    • Disconnect power to the appliance and turn off the water supply.
    • Open the dishwasher door.
    Open the dishwasher door.Open the dishwasher door.
    Preparation

  2. Accessing the Float Sensor

    • Remove the bottom rack.
    • Remove the quarter-inch screw on the back of the float sensor cover.
    • Pull off the cover and set it aside.
    Pull off the cover and set it aside.Pull off the cover and set it aside.Pull off the cover and set it aside.
    Accessing the Float Sensor

  3. Removing the Old Float Sensor

    • Remove the float by pulling it straight off.
    • Remove the wiring connector by squeezing the tab and pulling straight off.
    • Remove the two Phillips screws holding the float sensor to the dishwasher.
    • Pull the sensor out and set it aside.
    Pull the sensor out and set it aside.Pull the sensor out and set it aside.Pull the sensor out and set it aside.Pull the sensor out and set it aside.
    Removing the Old Float Sensor
    • Remove the float arm by pulling it straight out.
    Remove the float arm by pulling it straight out.
    Removing the Old Float Sensor

  4. Installing the New Float Sensor

    • Insert the float arm into the opening, ensuring the button on the sensor aligns with the protrusion on the float arm.
    • Insert the screws through the holes on the sensor, line it up, and tighten the two Phillips screws.
    • Install the wiring connector.
    Install the wiring connector.Install the wiring connector.Install the wiring connector.
    Installing the New Float Sensor

  5. Testing and Reassembly

    • Check float arm actuation by gently pressing down and listening for a click.
    • Set the bobber in place, aligning the hole with the arm.
    • Replace the cover, aligning the notch in the front and the screw hole in the rear. Reinstall the quarter-inch screw.
    • Reinstall the bottom rack and close the door.
    Reinstall the bottom rack and close the door.Reinstall the bottom rack and close the door.Reinstall the bottom rack and close the door.Reinstall the bottom rack and close the door.
    Testing and Reassembly

Read more: Fix Washing Machine Won't Spin: Quick & Easy Motor Coupler Replacement

Tips

  • Always disconnect power to the appliance before beginning any repair and test the outlet for proper voltage.
  • Remember to turn off the water supply.
  • Take note that the sensor could be installed incorrectly. Be sure to line up the button on the sensor with the protrusion on the float arm.

Common Mistakes to Avoid

1. Incorrect Float Sensor Placement

Reason: The float sensor isn't seated correctly in its housing, leading to inaccurate water level detection.
Solution: Ensure the float sensor arm is properly positioned and clicks into place within its housing.

2. Forgetting to Reconnect the Electrical Connector

Reason: The dishwasher won't function properly if the electrical connector to the float switch isn't securely reattached.
Solution: Carefully plug the electrical connector back onto the float switch, ensuring a firm connection.

3. Ignoring Debris in the Float Switch Mechanism

Reason: Food particles or other debris can interfere with the float's movement and cause inaccurate readings.
Solution: Clean any debris from around the float sensor and its housing before reinstalling.

FAQs

How do I know if my GE dishwasher float sensor is bad?
Common symptoms of a bad float sensor include the dishwasher not filling with water, not draining properly, running excessively long cycles, or displaying error codes related to water level. If you suspect a problem, check the float switch visually for damage. If it's stuck or not moving freely, it likely needs replacing.
Where can I find a replacement float sensor for my GE dishwasher?
You can typically find replacement float sensors for GE dishwashers at major appliance parts retailers, both online (like Amazon, RepairClinic) and in physical stores. You'll need your dishwasher's model number to ensure you order the correct part. Checking your dishwasher's user manual or the manufacturer's website is also recommended.