imzjustplayin

I know that O2 sensors have to heat up (non heated ones) in order for them to function, they're heated up by the exhaust manifold which is heated up by the engine. So I was wondering though, are heated O2 Sensors constantly heated? Say if I were to extract the heat from the exhaust manifold and used it for something else, bringing down the temperature dramatically, on a non heated O2 sensor it would cause problems with emissions since it would go into open loop mode.

So what about a heated O2 sensor? If a heated O2 sensor is always heated by the battery, this would be good because that would mean I could siphon off the heat energy of the manifold and use it for other purposes without consequence to the emissions and fuel economy since it would be able to maintain closed loop operation.