I'm trying to reach my Jag mechanic but I think he's gone home for the day. Getting the following codes. Anyone have any thoughts?

P0174 - System too lean bank 2
P0300 - Random/multiple cylinder misfire detected
P1316 - Injector circuit / IDM codes detected
P1111 - Intake Air Temp(IAT) sensor circuit intermittent high voltage.

 

The first 2 code descriptions are correct, the last 2 not so much.
P1316 is misfire excess rate.
P1111 means all the emissions related tests have passed.

I would start with cleaning the MAF sensor.

 

I'd swap the fuel filter, clean the MAF sensor and check for vacuum leaks.
And P1111 does not say anything, really, It's kind of always there.