My ford windstar was checked and it's showing 4 codes po 340 153 174 1450

Question

Auto zone hooked up Thier machine and found 4 codes

Answer 1

P0340 Camshaft position sensor circuit malfunction

P0153 02 sensor circuit slow response Bank 2 Sensor 1

P0174 System too lean Bank 2

P1450 Excessive fuel tank vacuum

Do vacuum leak check, especially at the purge hose , if there is no problem found in that area, you would need to do a KOER (Key on engine running test)

​ In the back of the intake manifold area, you need to make sure the EVAP hose are connected, to its vacuum source