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Corvette C4 Forum 1984 through 1996

Service engine soon

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Old 10-28-2015, 12:36 PM
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Join Date: Oct 2015
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Default Service engine soon

My service engine soon light came on so I plugged in my OBDII scanner and it said: PO171 bank 1 system too lean PO174 bank 2 system too lean and PO 300 random-multiple misfire detected...the car runs just fine. Is this a serious problem or can I reset codes and see if it comes up again? I drove it for an hour or two after the light came on and it ran just fine. Is there somewhere I can find out exactly what those codes mean?
 
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