My Nissan Armada '04 service engine soon light has been on for a while. I took it to get a NYS inspection and they said not to get the inspection until I figure out what's wrong with the engine because if they hooked it up to the computer it would be an automatic failure. I recently had to replace a part of the muffler/exhaust pipe because a clamp was missing and they had to weld a piece of piping on. I was just wondering what the possibilities were that might be wrong with it and appx. how much it might be to fix?also: have never had any problems as far as stalling or anything. Is it possible it could just be a sensor thing?
go to autozone and ask to borrow the obd 2 scanner its free they just hold your id till you bring it back hook it to diagnostic port and read code
same thing happened to me so i'm pretty sure it's a sensor! my guess bank 2, sensor 1. it's probably getting the wrong reading since the exhaust was altered. my friend is a mechanic so he hooked up a reader (or whatever those things are called) to my car and cancelled the light. good luck!
Many auto supplys will read the code for free once you have the code ask to write down the freeze data. That is data in the computer when the engine light turned on. I can with that information help you have the correct part replaced. Electric ARC Welding on electronic control car with the computers and electrical system plugged in is not a good thing. I will go out on a limb and guess P0420 or P0430 that is left side cat converter or right side cat converter both warrantied for 8 years 80,000 miles.
