Please tell me this stuff
My questions are in sequence and have to be answered as posted.

OK
Go back to led/sw and Key ON
press button 2/3 sec
Count flashes that come back 17 flashes
Repeat..you will get more flashes , but a higher number [ codes come back in numerical sequence] 17 flashes again
Continue the same process for each code until the original code comes back..then you know all codes have been retrieved.
Then go turn key Off for 10sec , On for 10 sec and start car.. Post that finding Check engine light came on when the car was turned off.