Kenmore Dishwasher Error Code 8-1

Error code 8-1 means the dishwasher detected a slow drain condition. The control board determined that water was not evacuating from the sump quickly enough during the drain cycle. The cause is either a blockage somewhere in the drain path, such as a clogged hose, plugged garbage disposer, or stuck check valve, or a damaged drain pump impeller that cannot move water properly.

Running the dishwasher with an active 8-1 error is not recommended. If water is not draining properly, it will sit in the bottom of the tub and can cause odors, sanitation issues, and potential water damage if it backs up. Resolve the drain blockage or replace the damaged pump before resuming normal use.

Check the entire drain path first. Remove and inspect the drain hose for debris, verify the garbage disposer connection is clear, and confirm the check valve moves freely. If every part of the drain path is unobstructed and the dishwasher still drains slowly or not at all, the problem is likely a damaged impeller inside the drain pump. You can often hear the difference: a pump with a broken impeller will hum or run but water will not move, while a blocked hose may cause the pump to sound strained or produce gurgling.

Start by unplugging the dishwasher or shutting off power at the breaker. Inspect the entire drain path: check the sump check valve, the drain hose for kinks or clogs, the garbage disposer connection for blockages or an un-removed knockout plug, and the drain loop check valve. Clear any obstructions and run a drain cycle. If the error returns after the drain path is clear, the drain pump impeller is likely damaged and the pump assembly will need replacement.

If the cause is a blockage, the repair costs nothing beyond your time. Clearing a clogged drain hose, removing a garbage disposer knockout plug, or cleaning a check valve requires no parts. If the drain pump impeller is fractured and the pump assembly needs replacement, a DIY repair typically costs $25 to $75 in parts depending on the model. A professional service call adds $100 to $200 or more in labor.