Heated Oxygen Sensor: Inspection

INSPECT HEATED OXYGEN SENSOR

Measure the resistance according to the value(s) in the table below.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
2 (HT) - 4 (+B)	20°C (68°F)	11 to 16 Ω
2 (HT) - 3 (E)	Always	10 kΩ or higher

If the result is not as specified, replace the heated oxygen sensor.

Fig 1: Measuring Resistance Between Heated Oxygen Sensor Terminals