Generic code PO171 system 2 lean bank 1 generic

PO171 Fuel System Lean Bank 1
PO174 Fuel System Lean Bank 2
PO430 Catalyst System Low Bank 2
A new fuel filter would be a good start.

Lean bank 1 and bank 2 , and throttle actuator system fault. Check reason for lean codes 1st, vacuum leak(s), air inlet boot and hoses, or low fuel pressure / clogged filter. Repair as needed then clear codes and recheck .

The P0171 means System too Lean (Bank 1) and P0174 means System too Lean (Bank 2).
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FGTech Galletto 2-Master

bank 1 is the side of the motor cylinder 1 is on.there fore bank 1 sensor is the sensor in the exhaust that comes off of the head wear cylinder 1 is.

P0171 means: System too lean (Bank 1) P0174 means: System too lean (Bank 2). Sounds like your injectors are not getting enough fuel.

Look for vacuum leaks,that are causing the O2 Sensors to go lean, and set codes on both banks

Sounds like you have low fuel supply or a leak in intake system causing lean codes, check fuek pressure and volume first. Cat converter effeciancy could be caused by the lean codes, purge system sounds like solenoid failure, check for high resistance accross purge vent solenoid.

po171 is system too lean,bank 1,po174,is system too lean,bank 2,It sounds like a fuel pressure problem.

change the air fow senser.

Hello;
With those codes, the first place I would check is the fuel pressure. Also check the fuel filter and replace it if you haven't already. Then clear codes and recheck. Even if your fuel pressure is with in range it still may not push enough fuel to operate your vehicle.