BearsLexus

I just popped these 3 today...
The 1150 actually shut off the second time it was read. Has anyone else had this combination, and if so, what might the solution have been?

P1150 - Air / Fuel ratio sensor circuit range /performance
malfunction (bank 1 sensor 2)
Probable cause :
1- Fuel Pump, Injector or pressure regulator fault
2- Vacuum Leak on engine
3- Faulty AF sensor heater circuit
4- Failed AF Sensor
P0136 - Heated oxygen sensor - bank 1 sensor 2 (H02S12)
circuit malfunction
Probable cause :
1- Open or short circuit condition
2- Air / Fuel ratio concern
3- Air leak near sensor
4- Faulty H02S12 (Bank 1 Sensor 2)
P0171 - System too lean - bank 1 (Cylinder number 1 denotes bank 1)
Probable cause :
1- Lean Air / Fuel ratio Fuel injector or vacuum leak
2- MAF sensor concern
3- ECT sensor fault
4- Faulty H02S (heated oxygen sensor)