I'd agree its probably a leak with the pressure as low as it is 6 weeks after filling. The system is variable pressure so that isn't a guarantee.

Code EB 1234 is the sun sensor. I think every E class made has that code present. Ignore it.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)