chevy trailblazer 2006, 4.2L, v6, code P017. What is the cause

Question

What is causing the engine code

Answer 1

HI there,

The P0171 code can be caused by several things. A leaking intake manifold gasket, a weak fuel pump, front O2 sensor, mass air flow sensor and exhaust leak can all cause this type of code. Each must be checked and eliminated.