Go back in and get existing codes.

Key ON
Press DM Led button for 2 secs.....release.
Count flashes as they come back
Repeast until all codes have appeared. Write them down and then clear all codes.

To clear, hold button for 8 secs after each code appears.
Turn key Off for 50 secs , On for 10 secs and start car .. Codes will be clear and CE should be out.

Post findings