Sorry the car is a saturn vue 03 and code p1599 p0171 p0172 ant it shuts off at red lights

P0172 LEXUS - System Too Rich Bank 1
Possible causes
Faulty front heated oxygen sensor
Ignition misfiring
Faulty fuel injectors
Exhaust gas leaks
Incorrect fuel pressure
Faulty Mass Air Flow (MAF) sensor
https://www.autocodes.com/p0172_lexus.html

and the mystery vehicle is????

the following links explain the codes and practical and a procedural way of doing so as to not through parts at problem
http://www.obd-codes.com/p0171 http://www.obd-codes.com/p0172

P1599 - means that the computer detected that the engine stalled when the ignition had not been turned off.
Does your vehicle have a stalling problem?

P2138 - is the Accelerator Pedal Position Sensor 1-2 correlation.
The accelerator pedal has a sensor and the throttle actuator has the one as well. the computer expect thats both sensor will read the same as the accelerator pedal is operated. If one sensor read differently from the other the computer will set this code.

Long story short, you'll have to have shop to check this code out for you since a scan tool will be needed in the diagnosis of this code.

I have the same problem with my 03 Vue. I found some people saying that you can install a bcm on your own and by turning the ignition on and off in a certain sequence it will program itself. However I personally am going to take my car to a dealer. You can try to find a shop that has a tech 2 scanner (gm specific scanner), but it's not easy to find.

P0171 System too Lean (Bank 1)
P0174 System too Lean (Bank 2)
P0154 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
P0134 02 Sensor Circuit No Activity Detected (Bank I Sensor 1)

Before you replace the sensor, you should check the voltage circuit for the heater. The sensor may be fine and not getting voltage to the heater inside.
The code 1599 just means the engine has stalled at some point. It does not tell you why or how.
I doubt the two codes are related.

p1599 refers to TPS (throttle position sensor) Stop by a local parts store (Advance, Autozone, etc) and have them do a free fault scan for you.

Check the charging system.

P1599 IS A STALLING ISSUE COULD BE BAD GAS / BAD FUELPUMP DIRTY FUEL FILTER
DISCONNECT BATTERY AND SEE IF THE LIGHT COMES ON AGAIN
U2107 HAS SOMETHING TO DO WITH THE COMPUTER LOOSING POWER AT THE BODY MOUNTS CHECK CABLES AND GROUND STRAP