P0171 Honda - civic 2004

Question

Have a 2004 Honda civic with a P0171 code. I replaced upper and lower O2 sensors. Car is consuming too much fuel and hesitates upon acceleration.

Answer 1

P0171 Fuel trim lean Bank 1

Have the fuel pressure check, low fuel pressure or even high fuel presssure will set a P0171, The fuel pressure specification should be at 40 to 47 psi