My check engine light just came on. I stopped by AutoZone and they said it was throwing a code P0148. They gave a read out that says it is a fuel delivery error-one bank lean. It also says it could be a bad O2 sensor, ignition miss fire, fuel injector problem, or a vacuum leak.

The car runs fine. Speed and acceleration is good and gas consumption seems fine.

Got any ideas.

 

Really P0148? Never heard of it before for any Jaguar (and not found using Search so it's not on these forums).

 

Now that you have the codes written down, have them reset the codes (or disconnect your battery for 10-20 minutes) and see if they reappear. Come back and ask others with more experience with this issue if it reappears, but it could have been a fluke if your engine's running fine is my take. Hopefully the codes don't come back.