%META:TOPICINFO{author="blundar" date="1078517100" format="1.0" version="1.1"}% The Oxygen Sensor measures oxygen content of the exhaust gases. Early Hondas used a 1-wire Oxygen Sensor but starting in the early 90's, a 4-wire sensor was used that included an integral heating unit in order to stablize the sensors readings. And begining with the 92-95 VX Vtec-E motor, a 5-wire Wide Band O2 sensor was fitted that also came on the 96-98 HX Vtec-E.

Joseph Davis had this to say about the 1 and 4 wire sensor readings: "O2 sensor: 14.7:1 AFR at 0.45 volts, anything higher is richer and anything lower is leaner - but noone can tellyou by how much. Stock O2 is calibrated for one thing and one thing only - stiochiometric."

• An lambda type oxygen sensor (sharp swing):
  

• Linear oxygen sensor output (wideband/special):
  

%META:FILEATTACHMENT{name="honda_stock_o2sensor.jpg" attr="h" comment="An lambda type oxygen sensor (sharp swing)" date="1078517033" path="C:\Documents and Settings\Administrator\Desktop\temp\wiki\honda_stock_o2sensor.jpg" size="4548" user="blundar" version="1.1"}% %META:FILEATTACHMENT{name="honda_stock_o2sensor_linear.jpg" attr="h" comment="Linear oxygen sensor output (wideband/special)" date="1078517060" path="C:\Documents and Settings\Administrator\Desktop\temp\wiki\honda_stock_o2sensor_linear.jpg" size="2933" user="blundar" version="1.1"}%