2001 Isuzu Rodeo with 7 codes read

I have an Isuzu 2001 Rodeo with the 2.2 ,4cyl. engine. I bought a Cen-Tech code reader from harbor freight. Hooked it up and it found seven codes. The first code : PO342 ,says Camshaft position Sensor A - Bank 1 Circuit low input. second code PO401 EGR flow insufficient . Third code : PO442 EVAP Emission control system leak (small). 4th code :PO456 , Evap Emission control system leak very small . 5th code: EGR flow insuficient. 6th code: PO442 Evap emission control system leak (small). and the 7th code: PO 456 EVAP emission control leak very small. Can anyone tell me which codes are the real culprit.It gave me 4 error codes and 3 pending a total of 7. Any help would be appreciated.


Thanks

If your reader has the function, erase the existing codes. Then drive for a week (or till the CEL comes on if its on now) and see if it comes up with any more. That way you arent chasing old codes.

Evap emissions codes are usually a loose or bad seal on the gas cap. Make sure its tight and dont fill up with the engine running.

Yeah, what Gizmo said.

Thanks Gizmo. I will try checking the gas cap and erase the code. I will report back after the 20 mile ride.