Hello all recently purchased this and thinking I was sold a problem!!! When I looked at no codes were in memory and ran awesome. Have had on road a week and sudenly got p0138 and p0139 at the same time, cleared then I received in pending a p0135. I have a scan tool so i can see the pending codes no check engine light on yet. Is this a lemmon should I dump it or is it a fluke. I also have a sound on driverside from engine when hot of a popping sound nissian says engine is fine sound could be a fuel pressure module!! Any feedback would be nice. Or a nissian tech in Barrie Ontario that can fix and advise.... Thanks