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Home › Toyota › 1991 › Tercel Base, C140 › Repair and Diagnosis (Single Page) › Engine Performance › Theory and Operation › Engine Controls - Theory & Operation › Computerized Engine Controls › Input Devices › Sub-Oxygen Sensor (Calif.)

Sub-Oxygen Sensor (Calif.)

Sensor is used in conjunction with O2 sensor. Sensor monitors oxygen content of exhaust gases and sends signal to the ECU.