Hello and welcome to fixya
The E13 error code on the WFMC
series Bosch washer`s refer to a drainage problem, as you may or may not already know. ( or in Bosch terms "pump time exceeded" )
What you may have is either a clogged pump, improper detergent being used, ( must use "HE"/lo-sudsing
detergent ) hence suds not allowing a proper drain cycle, or wires loose at the pump...the later being the least likely.
You haven`t mentioned if you`ve checked the pump...just hoses as you did mention.
Anyway, here`s the most likely way to remedy a E13 code.**Unplug the washer from the wall or turn off the breaker before attempting any repairs**
- Get some towels and if possible a wet/dry vac. If the machine drained, it won't be too bad. If your machine is stuck full of water, I can't say, hopefully you won't get wet. ( maybe you`re lucky enough to be close to a floor drain )
- Locate the round door on the front of the machine (about 6" in diameter, lower right corner)
- Find a drill bit or small screwdriver that fits in the hole in the round door.
- Insert the bit into the hole in the door. It will push in a tab, it doesn't take much force. Rotate the hole (clockwise) to 6'oclock and it should come free. (the edges are very sharp so be careful or wear chain-mail gloves).
- Once the door is out of the way you'll be greeted by a 3-4" plastic cap with wings so you can unscrew it by hand. ( you should also see a red ring with a string attached, if you pull this the door should unlatch, but getting the water out first is usually a good plan ) There is a small collector lip at the bottom of the cap, that is where you can hold the wet/dry vac to catch the water. Unscrew slowly so you don't get flooded, until it is unscrewed all the way out.
- Now pull out the trap and visually inspect the inside of the pump as well as the filter/trap. Hopefully you'll find the item/debris that initiated the error code.
- After removing any debris or obstruction`s re-install the button trap/lint filter and plug the washer in to power or reset the breaker and give it a test.
- Run a load and watch for leaks. Leave the pump access door off until you are sure you screwed the cap in tight and there are no leaks.
Ultimately you may have a faulty drain pump, but I would certainly start by performing the things I listed first.
Let me know if you require further assistance and if not and this solves your problem, please rate the solution I provided accordingly.
Thank you for coming to "fixya" and good luck.macmarkus