P1607 - suburu 2.5 whats the problem

Question

I have multiple codes p04020 p0301 p0328 p01507 p0442

Answer 1

P0402 Exhaust gas excessive flow

P301 Misfire number one cylinder

P0328 Knock sensor circuit high input

P0157  02 sensor circuit low voltage bank 2 sensor 2

P0442 Evap orative emmission control leak detected( small)

P1507 Idle control system malfuction

Correct  P0402 this is the EGR valve.( very rare on 2.5) when this is open it sets code p1507 which is idle control malfunction,To correct for p1507 you need to look for a vacuum leak ,this is coded up do to false air leak. which can be from the EGR. As for P0442 check the gas cap small leaks are usually gas cap loose or not secured