Pending codes do not set the MIL (yet).
Drive around for 2 more days and it will become an active fault code with MIL on.

P0174 - Fuel system lean Bank 2.
Air leak is a likely cause. Could be charcoal canister if that is connected to bank 2.

Do you have access to live data? What are the Long Term Fuel Trims?
Just to check that bank 1 is also lean, but just before the DTC limit.