Thread: 2008 grand prix p0054 code after 02 sensor replacement

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

Probably the wires. I'd check to make sure nothing is rubbing under there. That happened to me

Ok will check it out thanks