Hi everyone, i am new to this forum but have been reading alot of the posts. I absolutely love this forum great help from everyone. I have some trouble with the car and was hoping for some insight, for about a month or so i have had the check engine light go on and off and the Cruise unavailable light come on and off randomly.I took it to a repair shop and pulled out these codes:

P0171: System too lean bank 1
P0174: System too lean bank 2
P0191: Fuel rail pressure sensore circuit range/performance
P1236: fuel pump not responding to PCM commands

As a result, i failed my emmisions inspection and cannot drive the car very often without recieving tickets. My guess based on what i have been reading here is either a faulty O2 sensor or a vacuum leak. How would i go about fixing this i dont want to take it to the dealer and get raped so i was hoping i could give my mechanic a few places to start. I also have a K&N Air filter, i hope this isnt the culprit but younever no.By the way this is an 02 x-type 3.0 with 56,000 miles in mint condition. Any help would be greatly appreciated, thanks alot.

 

thanks alot will keep you posted when i fix...