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Old 08-11-2006, 03:04 PM   #1
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Default diag. cod p1020 2000 ssei

I threw code p1020 and it says maf vaf low system circuit voltage. Does anyone know if that means I have a bad maf sensor or just something like a ground problem or something like that. MAF 219 from dealer and i would hate to put one on for no reason
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Old 08-11-2006, 03:12 PM   #2
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It could possibly be a bad sensor. I would check the connection aswell as clean the MAF there is directions in techinfo. I have been told if you unhook the sensor and run without it and the code goes away that it'* a bad sensor. Someone else should verify that though, as I'm unsure.
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