O2 is the chemical symbol for oxygen. if something has O2 in it it has 2 oxygen molecules=)
do u mean CO2?
If you mean 02 then that is the greater.
oxygen or a mobile telephone company in the UK.
Downstream O2 sensor circuit volts high.Downstream O2 sensor circuit volts high.
No. do you mean the front or rear o2? The front might be an A/F sensor. Big difference. But no, there isn't.
If you mean o2 sensors, there is one. It is located on the exhaust manifold on the back side of the engine. Gm started the two o2 sensors around 94-95 when obdII was adopted.
chemical reaction of HEAT, FUEL & OXIGEN(O2) that is call FIRE.