A few of the issues that can cause your Frigidaire dishwasher to not drain require replacement parts. For instance, you might have to purchase a new motor or drain hose, or in some cases, replace the check valve. Luckily, Frigidaire is a well-known brand, and replacement parts are readily available. You can browse Frigidaire dishwasher parts on eSpares, Amazon, or Frigidaire Parts.