p0400 and p0325 for infiniti qx4 1997 model

Question

i send my vehicle to the mechanic to change leaking oil gasket and it came back with p0400 and p0325 code.

Answer 1

P0400 INFINITI - Exhaust Gas Recirculation Function- No/Low Flow Detected

Read more: https://www.autocodes.com/p0400_infiniti.html

P0325 INFINITI - Knock Sensor Circuit Malfunction

Read more: https://www.autocodes.com/p0325_infiniti.html

He probably left a hose disconnected for the EGR system and the Knock was probably there even before he change the oil gasket. take you QX4 back to your mechanic and have him fix the problem.