Air/Fuel Ratio Sensor (RX300)

NOTE: Air/Fuel Ratio (A/F) sensor may also be referred to as Air/Fuel (A/F) sensor.

AIR/FUEL RATIO SENSOR RESISTANCE

Temperature °F (°C)

⁽¹⁾ Ohms

68 (20)

.8-1.4

1472 (800)

1.8-3.2

⁽¹⁾	Measure resistance between terminals +B and HT of A/F sensor 4-pin connector. See Fig 1.

Fig 1: Measuring Air/Fuel Ratio Sensor Heater Or Oxygen Sensor Heater Resistance (RX300)