Never heard of a PO code for the sender, so I'll reserve comment on that and research it if I have to, maybe someone else has heard of that code.

It would be interesting to know if BOTH of those codes came back. The evap leak code is pretty common.
Often times it's caused by a loose fuel cap or a defective cap, so make sure it's tight, look at the seal inside the rim of the cap, etc.
Another common cause for this code is a part inside the rear bumper called the "charcoal canister shut-off valve". To properly test the system requires a vacuum pump and a scanner (the one I'm familiar with is the Mercedes shop computer called SDS=star diagnosis system). The shop computer can do an over-ride operation and electrically shut this valve, at which time the vacuum pump is applied to the system under the hood at the purge valve, and the ability of the fuel system to hold vacuum is monitored. It can NOT leak MORE than 5mb in 1 minute or the system will set this fault code. Many things can cause the leak, but the 2 items I mentioned-the fuel cap or the charcoal canister shut-off valve-are the 2 most common.

There is a sensor that enable the engine computer to monitor all this stuff-it's mostly US required stuff only, called "OBDII", so thank the Feds for this problem. The sensor IS built into the fuel level sensor/fuel pump assembly, so maybe the code for the sensor is just nothing, not too sure (throwing that code because of an evap leak). The evap leak code is quite common, I'd tend to worry the most on testing the evap system as I have described.

Gilly