Hey guys, wanted to share i just went thru the same issue w my identical Tundra. My fix ended up being an actual (and more expensive) OEM MAF sensor replacement. Originally i purchased a new sensor from a local popular DIY shop but it was still throwing the same code after install and reset. Maybe this might work 4 u 2, good luk.Yes its giving me P0101
Mass Air Flow Sensor Circuit Range/Performance. I replaced the MAF sensor and the air fillter and the PCV valve, but it still throws the code. Runs good as far as I can tell. And I know what my sensor readings are at different RPMs I just don't know what they should be.