Hello from JA
My name is Woody.
I will be glad to assist you today.
I have been servicing ALL Major Brands of Appliances for 35 Years,
and have over 100,000 in home repairs and over 80,000 internet repairs under my belt.
The add a dish and the washing light are not actual error codes .
Any actual error codes that the unit would have stored would show up as the clean light blinking a a pre set amount of times then a short pause and blinking another preset amount of times.
Your blinking light mean that you have a stuck key on the console.
And the console /control panel will need to be replaced.
The link below is to the part you will need from a highly recommended company rated A+ with the Better Business Bureau.
They offer a 100% money back guarantee, EVEN ON INSTALLED ELECTRICAL PARTS, for an entire year!
They are the only company to allow returns on installed parts for a refund and offer a FULL ONE YEAR WARRANTY!
If you have any questions just reply back.
And here is how to put your unit into diagnostics if you ever need it .
To invoke the Diagnostics Cycle, perform the following while in standby:
■ Press Start key to wake up control panel.
■ Press any 3 keys in the sequence 1-2-3-1-2-3-1-2-3 with no more than 1 second between key presses.
■ The Service Diagnostics Cycle will start when the door is closed.
■ To rapid advance 1 interval at a time, press the Start/Resume key. Rapid advance may skip sensor checks as some checks require 2 complete intervals.
NOTE: While you are in the Diagnostic Cycle, the Start/Resume feature is turned off (for example, Auto Resume after door interrupts) and the Start/Resume key becomes an individual advance key. ■