omlo75 Posted May 27, 2012 Share Posted May 27, 2012 I have read all relevant post related to the o2 sensor, check engine light, vsc off, and vsc. My problem started yesterday night while driving home and my check engine light, vsc off, and vsc light lite up. I had the guys at autozone scan it for me to see the code p0051 af sensor heater control circuit low 21 and the probable cause is an open or short circuit condition, af sensor heater relay fault, and failed af ratio sensor. Do you guys think the O2 sensor need to be replaced or this is related to the fan that cools the o2 sensor? How much do you guys think this will cost me at Toyota because this is where I have always had my 2004 Sc430 serviced with 54000 miles? Any response will be appreciated. Quote Link to comment Share on other sites More sharing options...
omlo75 Posted May 31, 2012 Author Share Posted May 31, 2012 Well it was $370 out of the door from Toyota but these numb skulls forgot to calibrate the vcs off for me so I will be taking it back soon to get that done but the check engine light is off so that is one positive. Quote Link to comment Share on other sites More sharing options...
Jwb1969 Posted July 10, 2018 Share Posted July 10, 2018 What did you end up replacing? What did $370 fix for you? Quote Link to comment Share on other sites More sharing options...
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