How to Replace Frigidaire Dishwasher Motor 155484401 and Test It

A Frigidaire dishwasher that fills without washing needs a different diagnosis from one that washes normally but leaves standing water. Motor 155484401 drives the wash pump on compatible models, while drainage faults can involve a separate pump or hose. This guide explains the motor tests, fit checks, and replacement sequence, including fresh seals and a final leak inspection.

Quick Facts

Is a Bad Motor Causing My Frigidaire Dishwasher Not to Drain?

Frigidaire dishwasher motor 155484401 runs the wash pump on compatible models; standing water with normal washing often points instead to the separate drain pump or hose.

The following details help narrow the decision.

Is 155484401 the Right Motor for My Frigidaire Dishwasher?

Confirm the part against the full model number before ordering; a family name or visual match alone does not prove compatibility.

Keep these points in mind.

• Check the model tag on the door edge
• Confirm the two-seal pump housing design
• Note the drain pump is a separate part
• Electrolux cross-reference

What would make this part a poor choice? A sound test result means you need to consider the other causes before ordering it.

Which Frigidaire Dishwasher Models Use Motor 155484401?

Confirm the part against the full model number before ordering; a family name or visual match alone does not prove compatibility.

Keep these points in mind.

• Frigidaire FFBD and FGBD series
• Frigidaire Gallery
• Electrolux EI and EW series
• Verify with the parts diagram

A model family describes a group of appliances, not one confirmed parts list; different versions can use a different length, mount, or connector. The full model identifier distinguishes those versions. Shared branding can also hide different internal designs.

How Do I Test the Dishwasher Motor With a Multimeter?

Follow these steps to check this part of the fault.

Check the Specified Test Conditions

1. Turn the breaker off for.
2. Disconnect power the motor harness.
3. Measure across the winding leads and expect a low reading in the single or double digit ohms rather than OL.
4. Check from each lead to the motor body for a short.
5. Spin the shaft by hand.

Resistance is measured in ohms with the part disconnected from power; a kilohm is 1,000 ohms. Continuity means there is an electrical path through the tested part. OL usually means that path is open or beyond the meter range.

Should I Cut Power and Water Before Replacing the Motor?

Yes, disconnect power before opening the assembly or testing resistance; restore it only for a separate powered check when that test is required.

Keep these points in mind.

• Breaker off
• Supply valve closed
• Disconnect the drain hose at the disposal or air gap
• Bail the sump
• Protect the floor

How to Replace Frigidaire Dishwasher Motor 155484401 Step by Step

Follow these steps to complete the covered procedure for Frigidaire dishwasher motor 155484401.

Phase 1: Uninstall the Dishwasher and Disconnect Water and Drain

1. Disconnect power and water.
2. Open the door.
3. Remove the Phillips counter mounts.
4. Remove the lower rack.
5. Place towels and a pan under the water line.
6. Disconnect the line with a 5/8 inch wrench.
7. Loosen the drain clamp with a 5/16 inch nut driver.
8. Disconnect the drain at the air gap.
9. Pull the unit out.

Phase 2: Lay the Unit on Its Side and Remove the Old Motor and Seals

1. Lay the unit on its side on a protected floor.
2. Release the motor harness tabs.
3. Remove the T20 bracket screws and bracket.
4. Rock the motor out.
5. Remove both old seals with it.

Phase 3: Fit the New Seals and Seat the New Motor

1. Clean the opening.
2. Fit the larger new seal in its first channel.
3. Fit the smaller seal in its front channel.
4. Wet the seals with soap and water.
5. Rock the new motor in until its flange is flush.
6. Fit the bracket groove and its two prongs into their slots.
7. Fit the two T20 screws.
8. Connect both motor plugs.

Phase 4: Reinstall the Dishwasher and Test for Leaks

1. Stand the unit upright.
2. Push it back in.
3. Thread the water line on by hand and tighten with a 5/8 inch wrench.
4. Connect the drain at the air gap and tighten its 5/16 inch clamp.
5. Fit the lower rack.
6. Fit the counter mounts.
7. Close the door.
8. Restore water and power.
9. Run a wash and check for leaks.

Should You Replace the Drain Pump, the Motor, or the Dishwasher?

Choose the repair that matches the confirmed fault; a cheaper part will not help if it belongs to a different part of the system.

Keep these points in mind.

• Drain pump $30 to $70 and 45 minutes when draining is the only fault
• Motor $120 to $220 and 2 hours when the wash pump is dead or grinding
• Replace the dishwasher when it is over 10 years old or the pump housing is cracked

FAQ

Does the Motor Come With the Seals?

Confirm that both seals are included in the exact motor package. Order fresh seals if the listing supplies the motor alone.

Why Does the New Motor Hum but Not Spin?

A jam, wiring fault, or incorrect motor fit can remain. A replacement motor cannot fix a blocked or damaged pump housing.

Can the Motor Be Replaced Without Pulling the Dishwasher Out?

The covered procedure pulls the dishwasher out and places it on its side. Do not assume there is enough safe access through the kick plate.

A Wash Pump That Runs and a Tub That Drains

You have a clearer path when the symptoms, model, and test results agree; focus on the failed part and keep the nearby wiring, mounts, and seals in view. A sound diagnosis helps the repair solve the original problem.

Check the full model number, then choose the compatible wash motor 155484401 and fresh seals so the wash pump runs again.