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Re: Maf P10201
Did you check the electrical connector to the MAF. At least check for the PCM 5 volt low reference signal at the input. It is possible the MAF sensor you got is bad, wiring from MAF output to PCM module or the PCM module itself. In many cases on reocurring MAF DTCs you may have to go through more than one or two MAF sensors until you get a good one. When I had a similar issue I went to a salvage yard and got a pull/used one. Make sure it matches your year. '99 and up. One from a '97/'98 SII 3800 engine will not work properly.
Also, check the throttle body intake for no obstructions and that the input screen is clean and present.
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