What does the code P174 P0171 mean on a 2012 Buick enclave

Question

I have a code coming up on my 2012 Buick enclave P0174 PO171

Answer 1

Hi there

These codes mean you have a lean fuel mixture on bank 1 and bank 2. Most of the time when both banks of the engine have this issue it's a result of a bad mass air flow sensor or low fuel pump pressure.

P0171 BUICK - Fuel Trim System Lean Bank 1

Read more: https://www.autocodes.com/p0171_buick.html

P0174 BUICK - Fuel Trim System Lean Bank 2

Read more: https://www.autocodes.com/p0174_buick.html