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Discussion Starter #1
Cold here in Chicago my check engine light came on no symptoms runs fine went to AutoZone said po121 throttle body positioning sensor can I clean it on the car or do I have to remove it
 

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You can't clean the throttle position sensor, it is enclosed. I would just clear the code and wait to see if it comes back.
 

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It might have just been due to the sheer cold - resistance increases tremendously, so that could have temporarily done it.
 

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Discussion Starter #5
Update I put some heet in the gas tank and after three days the c e l went out. Maybe it was the Sub-Zero temperatures thanks again
 
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