Amana Dishwasher Error Code 6-3

Code 6-3 means the control board detected suds or air in the wash pump. This prevents the pump from circulating water properly. The cause can be as simple as using hand soap instead of dishwasher detergent, or it can point to a hardware issue like a failed drain hose check valve or a stuck overfill float switch.

Running the dishwasher while 6-3 is active is not recommended. The pump is not circulating water correctly, so dishes will not be cleaned properly and the pump motor can be strained if it is running with air instead of water. Resolve the detergent or loading issue first, or inspect the check valve and float switch before running a full cycle.

If the cause is detergent or loading related, there is no parts cost at all. A replacement drain hose check valve typically costs between $10 and $30 for the part and is a DIY-accessible repair on most Amana models. Replacing a stuck or failed overfill float switch generally runs $15 to $40 for the part. If you hire a technician, expect a service call fee of $75 to $150 plus parts, though either repair is usually considered low complexity.

Start by letting the dishwasher run for about one minute, then open the door and look inside the tub for excessive foam. If you see heavy suds, the detergent is the problem. Switch to a proper automatic dishwasher detergent and run a rinse cycle. Also check that your rinse aid dispenser is not leaking and that no bowls or pots are loaded face-up. If suds are not present, inspect the drain hose check valve for debris or wear and check that the overfill float moves freely and is not stuck in the raised position.

Yes. If the rinse aid dispenser is cracked or the cap is not seated correctly, rinse aid can leak into the tub continuously and create excess suds during the wash cycle. Check the dispenser cap for cracks and make sure it clicks fully closed. Wiping the dispenser area dry and running a short cycle will confirm whether leaking rinse aid is contributing to the code.