Nissan Repair Questions? Ask a Mechanic for Answers ASAP
The maf sensor would only cause the problem if it's causing the car to run to rich. Sometimes the fuel additives will cause the code when they are mixing it for different seasons. Since it's been on for a year it's hard to say that would be the problem. I would also check for any small exhaust leaks or intake manifold gasket leaks. If you had a scan tool you could look at the fuel trim to try and determine if the maf is working as it should. In most cases a rich running car will cause that code. I would also check the spark plugs. If they aren't burning clean in the colder weather it might be causing a rich mix that's causing the problem.
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