'98 E320 Check Engine Codes--P0170,P0161,P0460
 

Help--Got this car back from Mercedes dealer to have 4 tires installed and after 10 miles set check engine light. Pulled following codes:
P0160--Bank 2 02 heater circuit
P0170--Fuel trim Bank 1
P0460--Fuel Level sensor A circuit malfunction.

History: Car had P0170 and P0173 codes about 500 miles ago--replaced Maf with known "good" used maf--reset check engine light and now the above has occured.

Any help and suggestions will be greatly appreciated.