... of thin microporous platinum electrodes on both sides (Picture 2). The inner electrode is exposed to the atmosphere, while ... heater Automotive Oxygen sensor with heater Picture 1 Picture 2 Automotive oxygen sensor is situated in the exhaust pipe. ... lean exhaust (AFR is high) produces voltages less than 0.1V, while a rich exhaust (AFR is low) can ... ,C3 1.1i,1.6,C4 1.6,2.0,C5 2.0,3.0,C6 3.0,C8 3.0 96359785