Oxygen Sensor Heater

Oxygen sensor heater may be used only on various models and oxygen sensor applications. See OXYGEN SENSOR APPLICATION table.

OXYGEN SENSOR APPLICATION

Application/ Model

Main Oxygen Sensor

Sub-Oxygen Sensor

Sensor Heater

Tacoma

⁽¹⁾ X

N/A

⁽²⁾ X

⁽¹⁾	One on exhaust pipe in front of catalytic converter and one on exhaust pipe behind catalytic converter.

⁽²⁾	Heater used on main oxygen sensor.

OXYGEN SENSOR HEATER RESISTANCE SPECIFICATIONS ⁽¹⁾

Application

Ohms @ 68°F (20°C)

Front Oxygen Sensor

5-7

Rear Oxygen Sensor

11-16

⁽¹⁾	Measure resistance between sensor terminals +B and HT. For terminal ID, see the illustration in the SYSTEM/COMPONENT TESTS - 2.4L article.