2009 VW CC codes P12A2,P0171,P0341

Question

CE light on, threw too lean bank 1 code. CE went off. Came back on, no running issues on the highway. Pulled into parking came almost to stop. On restart dash data center flashed Check Engine service now. Little stutter in engine. Repeated every slow start off. On highway no issue in running. Got home code reader had all the above codes? Idle RPM fluctuating slightly. All those codes from what I can find relate in some way to fuel system? Where would you suggest from here?