Suds in a dishwasher usually come from using too much soap or the wrong kind. Soap can build up over times causing problems. First start a cycle.Do not add detergent or any dishes.When it starts washing, pour a cup of vegetable oil directly into the tub. This will cut the existing soap suds. You may need to try this a couple time before the dishwasher will drain. After all suds have been removed, load you dishwasher and start a cycle filling the detergent cup up half way. If it goes through the cycle with no problems, you should be all set. Still have the problem? A rinse aid dispenser that dispenses too much rinse aid will also cause the dishwasher to suds up. You can remove the dispenser from the door, flush it out and reinstall. Make sure you turn the circuit breaker off before taking the door apart. After rinsing it out, do not add rinse aid. Try the dishwasher and see if the problem goes away. I've seen people accidentally put liquid dish detergent in dispensers too. A dishwasher that has suds is apt to leak. Fix your suds issue and you most likely will fix you leak