Faulty pressure switch. It needs to be replaced. A common problem on these machines with steam.
Sent from my DROID BIONIC using Tapatalk 2
I wouldn't be to sure about the pressure switch. I am doing a steamer that is giving the same code, replaced the pressure switch & it did no good. I have a control board on back order that after a lot of research points that it may be the culprit. The expected ship date is July 19. I've cleaned the pump plugged & unplugged all of the connections (there is a lot & it is time consuming) tried putting it into the two diagnostic modes but they are not working correctly. It goes into a steamer diagnostic one dance earlier than it is suppose to & it's auto diagnostic bows out after the filling starts.
The manual is located in a pouch under the steamer & CCU boards. By the way there are 3 main control boards, one a motor control board & a steamer board. Good luck with yours & update us with what transpires.