'98 E320--check engine light--pulled P0160,P0170, and P460 codes

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.
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Unless the shop disturbed something during the tire work, a non-expert opinion is to suggest the fuel pressure regulator or accumulator.
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That's that durn pay jerkin shrimp light again...
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