P0171 p0174 p0131 where is all this located and whats needed

Question

It sounds like its choking when applying gas

Answer 1

HI there, 

The first two codes are for lean fuel mixture conditions. Typically when it's affecting both banks of the engine the issue is with either low fuel pressure or the mass air flow sensor.
P0131 could be a result of what the computer is seeing in the lean fuel mix.
P0131 CADILLAC - HO2S Circuit Low Voltage Bank 1 Sensor 1

Read more: https://www.autocodes.com/p0131_cadillac.html

P0171 CADILLAC - Fuel Trim System Lean Bank 1

Read more: https://www.autocodes.com/p0171_cadillac.html

P0174 CADILLAC - Fuel Trim System Lean Bank 2

Read more: https://www.autocodes.com/p0174_cadillac.html