P0455 and P0456 solved...

[blackmercedes]

I've been having these two codes for a little while. They were accompanied with the fuel reserve light flashing, which "normally" indicates a loose gas cap. However, the gas cap is tight and all the evap system valves seem to be functioning normally.

Took it in to my indie for an SDS hook up, but before connecting it, he knew what the problem was. The fuel level sensor is also part of the evap system and will cause the symptoms. And so the SDS confirmed.

Anyway, replaced both as the tank had to be drained anyway. Problem solved.

Car: 1998 C230, M111 aspro engine. Mileage: 202,000