I have a 2001 Nissan pathfinder, 3.5 liter. I have these codes coming up. p1130, p0174, p0171

Question

we have replaced swirl control valve solenoid and the codes still came on. Also have replaced mass air flow sensor. Also have replaced right front cat converter. we have replaced fuel filter.

Answer 1

P0171 and P0174 are for lean fuel trim mixtures on bank 1 and bank 2. On these, this is normally caused by a problem with the Mass Air Flow (MAF) sensor.

The P1130 is for the Swirl Control Valve Control Solenoid Valve, but sometimes the problem is the vacuum hoses that connect to the valve. Remove them one by one and check if the hoses are clogged.

P1130 NISSAN Code - Swirl Control Valve Control Solenoid Valve
Read more: https://www.autocodes.com/p1130_nissan.html

P0171 NISSAN Code - Fuel Injection System Too Lean Bank 1
Read more: https://www.autocodes.com/p0171_nissan.html

P0174 NISSAN Code - Fuel Injection System Too Lean Bank 2
Read more: https://www.autocodes.com/p0174_nissan.html