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Went to the dealer this morning, I've been driving with this code 0121 for about a week now. (throttle position sensor and MAP sensor disagree) The DC tech said it was from gaining elevation to fast and confusion the barometric pressure in the engine. Which makes sense because the light came on when i was doing 90 up a pretty steep grade we have on a local highway. She's gonna need a flash to the computer and a new throttle position sensor...all under warranty of course. Just figured i'd post because i could find NOTHING when i searched and asked about code 0121.
 
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