Hello there, got an OBDeleven and pulled the codes (the check engine light in on, engine runs great). This is what I have:

P1923 Check DTC memory of engine control module (ECM) 2, status Static
P1577 Right electro-hydraulic engine mount solenoid valve, open circuit, status Static

P000D "B" Camshaft position slow response (Bank 2), status Intermitent
P0159 O2 sensor circuit, bank 2, sensor 2, slow response, status Static
P0056 O2 sensor heater contr. circuit, bank 2, sensor 2, no signal/communication, status Static
P1140 Bank 2, sensor 2, internal resistance too high, status Static

I have a few more codes on brakes, A/C, dashboard, immobilizer, driver seat, navigation, comfort system, parking assistant, and telephone, won't bug you with these at this point. But the engine codes concern me even if the engine runs great. How serious are they and what do I need to do to fix or can I even fix myself? I went to a local shop that is highly recommended on the local WhatsUp forums for super cars, they checked the codes and told me the Bosch battery is shot and must be replaced, there is nothing wrong with the car and replacing the battery will take care of the check engine light. I had my doubts that is correct, maybe I am wrong. The OBDeleven came up with a total of 24 faults. I am not interested in the faults for the seat or the navigation system or the telephone but the engine is another matter.

Also, if you are in front of the car, which one is bank 1 and which one is bank 2?

Thank you