How to Troubleshoot & Replace Bosch AP2802212 / 00298564 Dishwasher Drain Hose

The bottom of the dishwasher was full of water leaking from the Heater Assembly. This caused the float to activate the Drain Pump that ran all night and would continue to run even though a CL was showing in the LED that the machine was done with its cycles. The Heater Assembly had a hole burned through the side by the heater element after 15 years of use. Had to disassemble the whole dishwasher to replace the part. Not an easy job but cost 1/4 the price of a new dishwasher and works like new again. 

1. local plumbing store did not have any plastic pipe that might have worked. 2. I fashioned 2 splices, one coming out of the dishwasher, the other going into the disposall. I used a 5 ft section of clear plastic tubing that was just large enough to fit over the 20mm PVC pipe and accept stainless screw type tightening clamps. Great idea? Not! it crimped when I pushed the dishwasher back into its cubby hole. Rule of thumb: "Too clever, too dumb". 3. Google "Bosch dishwasher waste pipe failure". get blog that explains how to get pipe out of dishwasher cabinet. Take of left side panel, not the back panel. The same blog pointed me to a source for the pipe with custom ends that probably only fit this model of Bosch. The blog pointed me to a link to AppliancePartsPros.com exactly to the part. I ordered for ~$21.00 including shipping on Sunday over the internet. Received them on Tuesday. Fixed in 20 minutes after gaining the experience of ~4 hours redoing the electrical connection end closing up the opening from the cubby hole to the outside of the house which was gnawed out by the mice. We caught 5 mice in the process using electrocution style mouse traps. Whew!!!! 

I figured a new dishwasher was going to run me $1000, and getting my repair guy out to look at my 11 year old bosch would be $89 (then I'd find out repair cost), so $50 of supplies and an attempt seemed like a good bet. If I had been unsuccessful I was planning to buy a new unit (didn't want to spend $400 repairing an 11 year old machine). Worked with my husband. I replaced the drain hose first. That was very simple. Then we tackled the lower door seal. Watched a few different videos. It was actually not that hard. Just be sure to line it up correctly and then attach the rubber to the bottom of the dishwasher after it's installed. (The old one was disgusting and misshapen, no wonder it may have leaded). Finally, the door gasket, which literally takes 2 minutes total. Much more time was spent cleaning the area after we removed the old one (lots of mineral deposits and other gunk). All told, it took me less than 2 hours for these three repairs as a total novice (have never repaired any appliance ever). I'm happy I did and hope I'll get a couple more years from the machine. And I would not be scared to do another repair on it. 

Replaced drain hose. You-tube video made it easy. 

I received the wrong part so plumber was unable to do work and said he would get the hose. AppliancePartsPros.com gave me a total refund including shipping. The customer service rep, Sally, to whom I spoke on the phone was very helpful and very pleasant. Terrific customer service!! 

Fixed it myself. Took only 15-20 minutes to remove the old hose and connect the new one. The parts were exactly what I needed to make the repair. The repair video on the website was very helpful. 

Pulled the dishwasher out, removed the side panel, disconnected the old drain hose. Attached the new hose and reinstalled the side panel and pushed the dishwasher back into the area under the counter. Total time 20 minuets. Repairman's estimate $263.00. My cost under $30.00 and 20 minutes of my time. Even if I factor the repair company service call fee of $65.00 I still saved enough for a dinner out. Works for me. 

Ordered a new drain hose and coupling to attach to the garbage disposal. Parts arrived in less than a day, awesome. Watched video on your site showing how to do it. Video is good but I needed to remove from base plate and side panel attached with star screws to get to the point the video showed. 

I removed the dishwasher from under the counter (disconnecting water and electric), confirmed that the springs were fine, and saw that the string had worn down and snapped on one of the tension roller assemblies. I ordered new tension roller assemblies (there were two in the package). I removed the side panels and the base to install them. The entire project took me about six hours for dishwasher removal, diagnosis, repair, and re-installation. This also included replacing the drain hose, which I discovered was cracked when I removed the dishwasher to diagnose the door problem. 

Ordered new hose which I could not find locally