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Hey guys I'm new here and I'm struggling tryin to find answers. My FRS has a stage 2+ tune as well as E85 and unequal length headers. it has been throwing this code for both of my sensors after my up stream sensor got cut awhile back. it is stored as a PDTC and I do not know I am supposed to delete this code, could anyone help?
 

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What exactly do you mean when you say “up stream sensor got cut”? Its been disconnected?

Its just an O2 sensor heater code so I cant think of any reason not to try clearing it and seeing if it comes back. If the code does return it may be that you need two new sensors.
 
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