Unable to correct error code on LG Dishwasher (IE, E1, or other code)

If you are getting a IE or similar error on your LG dishwasher and have not been able to solve the problem using information based on that code, check the serial number of the dishwasher. If the first three numbers are between 501 and 702 you may have this problem:

The black mastic sound insulation material inside the dishwasher door can soften from the heat inside the dishwasher, allowing the wires inside the door to become embedded in it. If this has happened, the insulation on the wires can soften and begin to dissolve, resulting in shorted or broken wires. This may cause various error codes which may send you on a wild goose chase.

Take the screws out of the door and inspect the black insulation and the wires. If any wires are embedded in the black mastic, you may cut them and bypass them with a new section of wire, then make sure to add an insulating material to separate the wires from contacting the black mastic. In severe cases, the inner door panel must be replaced (they no longer use that type of mastic) and the wiring harness for the dishwasher would also be replaced. (a set of all the wires and plugs).