Post by
SteveTheTech »
https://forums.nicoclub.com/stevethetech-u103802.html
Thu Dec 31, 2009 6:53 pm
First thing I would check is the MAF. Pull it out and look inside with a flash light, make sure you have not ingested a leaf or bug part. The closed loop control is a tricky one and without watching the live data I can only shoot in the dark.
More likely than not the P1148 will set as a secondary code, by its logic it is more of an effectual trouble code than a root code. Something like a Cam Position sensor dtc would lead you to the cause. This code right here and my personal favorite U1000 are those that can try the most senior diagnostic techs sometimes. Remember check the basics first then work from there.