I had a P0651 and a P0 452 code so I replaced the fuel pressure sensor with one from O’Reillys 30 minutes later to the check engine light comes back on so I do some more tinkering around can’t figure out anything with my baby so eventually I take it to a shop and they had it for three days after the first day I get a call saying that the mechanic was stumped didn’t know what was causing it there. A few wire issues and the next day they suggested replacing the fuel pump with the OEM one and the fuel pressure sensor with an Oem oneThat cost about 1100 bucks three days later the check engine light comes back on at first it was just a P0651 open voltage circuit be and then just as yesterday but a week later the P0452 is back on it last night on the way home from work tighten fuel Message came on so I tighten that these codes just won’t go away I wonder if anybody’s had this problem before if they could Pass what they know or whatever and let me know how to fix this issue you can email me at jason.kluey@gmail.com

 

Have you done any other work recently in that area? If the new sensor is good, a 50/50 crapshoot with some aftermarket parts, the rest could be wiring or even a problem at the Powertrain Control.

 

Yes I’ve replaced the ac low pressure switch fuel pump was actually the original from 04 with 300k lol new fuel pressure switch new throttle body replaced front seats original ones had no airbags in side and the ones I put in do have air bags I also replaced fuel cap

yet occasionally the tighten fuel cap comes on

The interior light. Flickered last night only time they did that

Ac don’t work any more unless it’s in neutral and I rev it t 2000 rpm

 

Sounds like a tech needs to get involved and inspect. The a/c problem sounds like it is just low on refrigerant but a/c gauges can be hooked up for a reading. Have you looked thru you tube about the codes you listed?