Here is a picture of pin connector to get codes and location.
Turn ingition switch to off, disconect pin connector.
Turn ignition switch to run position and hook up jumper wire to indicated pins for 2 seconds no more no less and disconnect jumper wire.
Check engine light will flash example 1 fash pause 2 flashes = 12
Codes will continue to flash so you do not have to hurry to get them read.
Napa may check them, give them a call.
Post codes.
