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Five Types of Oxygen Sensors Unheated Thimble-type O2 Sensors (LS) Bosch introduced this design in 1976 for feedback fuel control on automotive engines. Titania O2 sensors are used on less than 1% of O2 sensor-equipped vehicles: ’86-’93 Nissan 3.0L trucks ’91-’94 Nissan 3.0L Maxima, 2.0L Sentra ’87-’90 Jeep Cherokee, Wrangler, and Eagle Summit Heated Planar-type O2 Sensors (LSF) Introduced by Bosch in 1997, this O2 sensors uses a laminated flat strip of conductive ceramic, electrodes, insulation, and heater.
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