How to Replace the Drain Pump on a Frigidaire Dishwasher (Part 5304497818)

The drain pump on a Frigidaire dishwasher is responsible for evacuating dirty water from the tub at the end of each wash and rinse phase. When it fails, you will see standing water in the bottom of the tub after a cycle completes, and the display will show error codes i20 (slow drain) or i40 (drain failure). The Frigidaire drain pump (part number 5304497818) is a compact motor-driven impeller unit mounted underneath the dishwasher tub, separate from the larger circulation pump.

This is one of the most common repairs on Frigidaire dishwashers over 5 years old. The drain pump motor wears out from debris passing through the impeller, or the impeller itself can crack or seize. The good news is that the pump is accessible from underneath without removing the dishwasher from the cabinet, and replacement takes about 30-40 minutes.

Before You Start

• Tools needed: Torx T15 driver, Phillips #2 screwdriver, needle-nose pliers, 1/4" nut driver, towels, shallow pan
• Parts needed: Drain pump assembly, part 5304497818 ($45-$80)
• Time required: 30-40 minutes
• Difficulty: Intermediate
• Safety warning: Disconnect power at the circuit breaker. Turn off the water supply. Remove standing water from the tub before working underneath. The pump motor has electrical connections that can shock if power is not fully disconnected.

Step-by-Step Instructions

Step 1: Confirm the Drain Pump Has Failed

Before replacing the pump, rule out simpler causes of drainage failure. Remove the flat mesh filter (lifts straight out by the center handle) and check for food debris in the filter well. Check the drain hose under the sink for kinks or clogs. Clear the air gap if installed. Run the garbage disposal to clear the shared drain path. If all these are clear and you still have standing water, listen during the drain phase: a humming sound with no water movement means the impeller is jammed or broken. Complete silence means the pump motor has failed electrically.

Step 2: Disconnect Power and Drain Remaining Water

Turn off the circuit breaker. If there is standing water in the tub, bail it out with a cup and towels, or use a wet-dry vacuum. The less water inside, the less will spill when you disconnect the drain hose underneath. Place towels and a shallow pan under the front of the dishwasher.

Step 3: Remove the Lower Access Panel

Remove the 2 Phillips screws holding the kick plate at the bottom of the dishwasher. Pull the panel forward and set it aside. You now have access to the underside of the tub where the drain pump and circulation pump are located.

Step 4: Locate the Drain Pump

Look underneath the tub. You will see two pump assemblies: the larger circulation pump (drives water through the spray arms) and the smaller drain pump. The drain pump (5304497818) is typically on the left side, connected to the drain hose that runs to the disposal or sink drain. It is a compact cylindrical motor with a rubber hose connection on the outlet side and a connection to the sump on the inlet side.

Step 5: Disconnect the Drain Pump Wiring

Locate the electrical connector attached to the drain pump motor. This is a 2-wire connector with a locking tab. Press the locking tab and pull the connector straight out. Photograph the connection first so you know the orientation for reinstallation.

Step 6: Remove the Drain Hose

The drain pump outlet connects to the drain hose via a spring clamp (hose clamp). Use needle-nose pliers to compress the spring clamp and slide it back along the hose. Twist and pull the hose off the pump outlet nipple. Have your pan ready underneath because residual water will drain from the hose. Some models use a screw-type hose clamp instead of a spring clamp; use a flat-blade screwdriver to loosen it.

Step 7: Remove the Drain Pump from the Sump

The drain pump attaches to the dishwasher sump housing with either a twist-lock mounting (quarter-turn counterclockwise to release) or 2-3 screws. On most Frigidaire models, it is a twist-lock: rotate the pump body counterclockwise about 30 degrees and pull it straight down. A rubber gasket or O-ring seals the pump to the sump. Inspect this gasket when the pump is removed. If it is damaged, cracked, or flattened, replace it (often included with the new pump). Clean any debris from the sump opening where the pump was mounted.

Step 8: Install the New Drain Pump

Compare the old pump to the new one. Verify the inlet and outlet sizes match, the mounting configuration (twist-lock or screw) is the same, and the electrical connector type matches. If the new pump includes a fresh gasket or O-ring, install it on the sump opening. Position the new pump into the sump opening. For twist-lock mounts, insert and rotate clockwise until the pump locks in position. For screw-mount styles, install all screws before tightening any fully.

Step 9: Reconnect the Drain Hose and Wiring

Slide the drain hose back onto the pump outlet nipple. Position the spring clamp over the hose-to-nipple junction and release it to grip. Verify the clamp is fully engaged on the nipple (not sitting on just the hose). Reconnect the electrical connector to the pump motor. Push until you hear the locking tab click.

Step 10: Test for Leaks and Proper Drainage

Restore the water supply. Restore power at the breaker. Run a short cycle and let it fill. When the drain phase begins, listen for the new pump running (a smooth whirring sound). Check underneath for leaks at the hose connection and at the pump-to-sump junction. After the cycle drains, open the tub and verify no standing water remains. The tub bottom should be completely dry within the filter well area.

Reinstall the kick plate with its 2 Phillips screws.

Diagnosing Drain Pump vs. Other Drain Issues

When to Call a Professional

• The drain pump is integrated into the circulation pump assembly on your specific model (some older Frigidaire models combine both into one unit). This is a larger, more expensive repair.
• After pump replacement, error codes persist. The control board relay that powers the drain pump may have failed.
• You find water damage or extensive corrosion on the dishwasher frame underneath. This may indicate a long-standing leak that requires additional repairs.
• The sump housing where the pump mounts is cracked or damaged, preventing a proper seal.

Cost Comparison: DIY vs Professional

Need Professional Help?

• Dishwasher repair service
• Frigidaire appliance repair
• Dishwasher repair cost guide

FAQ

Q: What error codes indicate a Frigidaire drain pump failure? A: Error code i20 means slow drainage (pump running but water draining slowly, often a partial clog). Error code i40 means complete drain failure (pump either not running or unable to move water). Error code i50 on some models specifically indicates a drain pump electrical fault. Clear the filter and hose first; if codes persist, the pump likely needs replacement.

Q: Where is the drain pump located on a Frigidaire dishwasher? A: The drain pump is underneath the dishwasher tub, accessible by removing the lower kick plate (2 Phillips screws). It is the smaller of two pump assemblies, typically on the left side. The larger pump is the circulation pump (drives spray arms). The drain pump connects to the drain hose that routes to your sink disposal or drain.

Q: Can I clean the drain pump instead of replacing it? A: If the pump motor still runs (you hear humming during drain phase), the impeller may be jammed by glass shards, fruit pits, or other hard debris. Remove the pump and inspect the impeller chamber. If the impeller spins freely after clearing debris, reinstall and test. If the impeller blades are cracked or the motor does not run at all, replacement is necessary.

Q: Is the Frigidaire drain pump the same as the Electrolux drain pump? A: Yes. Frigidaire is manufactured by Electrolux, and the drain pump part 5304497818 is used across both brands for models of the same generation. Electrolux part numbers for the same pump may differ in prefix but the physical part is identical. Cross-reference using your model number.

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