Help needed with P0171 & P0174 running lean at idle. My fault!

[Foggy]

The intake removal job is pretty easy. There is no coolant in it..
That's why I don't really understand the importance of doing the oil pressure sensor
job without pulling the intake as it's really easy.. Just my opinion...
The fitting on the back of intake to the brake booster is a swivel type fitting.
It will rotate but you should not be able to move it back and forth.. So you
may have found your issue.

 

[Kapitein]

Fixed!

Intake manifold removed today, found this sealed plastic nipple (somebody here will know the name) broken off close to the fuel rail.... Guess I caught it or leaned on it when replacing the pressure sensor and busted it.

Capped it off and it's running normal again. Fuel trims back to how they should be.

Relieved!

 

[pbr333]

vcume leaks, use wter with it runningto find.squirt botle
also chek tps.

 

[TorqueInd]

I am having the same issue with my 2015 6.2. Glad you found the issue. This post was very helpful. I will be searching for the vacuum leak today. I hope I find it!

Cheers