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2008 grand prix p0054 code after 02 sensor replacement

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daviddawg

New member
Changed my downstream 02 sensor and about 60 miles later got a code p0054 after starting car after it sat all night. I reset code and car was fine for about 60 miles then code came back after morning start up I know this code has to do with 02 sensor heater but wonder why every 60 miles thanks for any help
 


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