Found this..by Chris F
Member since:August 25, 2007Total points:386 (Level 2)
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i know how you feel. this code is a very common code to set on many asian and american vehicles. one major thing that happens to these nissans that may or may not cause the vehicle to run poorly is the air intake boot. it is a tube about 2 1/2 inches in diameter that goes from you air filter box to your throttle body. this boot rubber can get torn and a tiny crack in it after the mass air flow sensor(MAF for short) will allow too much air into the engine and the computer will not compensate for it (after the mass air flow sensor it can't measure it. only air through the MAF sensor will be measured). The other common problem on this code in general is what is called a vacuum leak. there should be a vacuum diagram sticker on the bottom of your hood (it might be somewhere else but always in the engine compartment.) try to follow this diagram as best as possible and see if one of the small vacuum hoses have a leak or might be disconnected completely. the only other GOOD possibility i can come up with, and this is a last resort(price), is a faulty MAF sensor. this part however needs a quality repair shop to properly diagnose it using a digital multimeter, a scan tool, or a combination of the two.
Reading other things too, like rodent damage to wiring and hoses, plugged pickup sock on fuel pump. Hope this helps.