My experience
is that the codes can be for many things. One I thought was MAF from the one line description (and what people were posting) turned out to be an air leak in the intake but could have been 3 or 4 other things. I cleaned the MAF first. And am still running 3 years and about 8k miles later with the original MAF (56K miles total). But, at least in my case, the MAF itself wasn't the problem though from the code it could have been.
Post the code Pnnnn and we'll give you a list of what it could be direct from the folks who designed in those codes.
At least cleaning the darn thing gives you an excuse to buy a new tool and the cleaner itself is pretty darn cheap. And if it works, a big win.
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