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dcb · 11-29-2009, 04:49 PM

IIRC, the heated sensor on saturns (HO2S) is the rear one. It is basically a sanity check of the front (non heated) one so the computer knows when to throw a cat or one of a few o2 sensor codes. Pretty sure most obd cars have at least a rear heated sensor but not necessarily a front one, and the front one is the one that you "drive" on.

11-29-2009, 04:49 PM	#7 (permalink)
dcb needs more cowbell Join Date: Feb 2008 Location: ÿ Posts: 5,038 pimp mobile - '81 suzuki gs 250 t 90 day: 96.29 mpg (US) schnitzel - '01 Volkswagen Golf TDI 90 day: 53.56 mpg (US) Thanks: 158 Thanked 269 Times in 212 Posts	IIRC, the heated sensor on saturns (HO2S) is the rear one. It is basically a sanity check of the front (non heated) one so the computer knows when to throw a cat or one of a few o2 sensor codes. Pretty sure most obd cars have at least a rear heated sensor but not necessarily a front one, and the front one is the one that you "drive" on. __________________ WINDMILLS DO NOT WORK THAT WAY!!!