Just wanted to share my recent ses light story.
i recently had codes p0142 and p0143. I had read something about a federal emissions warranty, so i called 1-800-nissan. they told me thats outside of cali (4/50) its 3/36. my car just passed the 36,000 mile range. doh.. anyhow, apparently there is a tsb on p0142, so i took it to the dealership anyways. they reprogramed it and the p0142 dissapeared. but p0143 stayed.. i took it back again, and they said that the cat converter had to be replaced.. and the emissions warranty is actually 8/80 (wow! ) which covers the cat converter. anyways, long story short, my ses is not on anymore. and i'm a happy camper. by the way, i'm from atlanta, and the dealer i went to was on cobb pkwy in marietta. they treated my pretty well.. much better than my toyota experience, when they broke more things then they fixed.. but thats another story..