If the timing belt has jumped can trigger the code po171

Question

Engine is running rough lost of power seems like is not injecting enough fuel hard to start

Answer 1

P0171 Fuel system lean bank 1

Fuel pressure should be check the specification are 35psi - 40psi. Yes a jumped timing belt can set P0171. P0171 is for lean codition this can be from EGR sticking open, False sir leak after MAF(mass airflow) sensor,plugged fuel filter.