Exhaust Gas Temperature Sensor

Exhaust gas temperature sensor (EGT sensor) is installed exhaust manifold. Exhaust gas temperature sensor uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rises.

Fig 1: Identifying Exhaust Gas Temperature Sensor

Courtesy of NISSAN NORTH AMERICA, INC.

TEMPERATURE, RESISTANCE AND VOLTAGE SPECIFICATION

Exhaust gas temperature

Voltage⁽¹⁾

Resistance

100°C (212°F)

4.74 V

18.25 kΩ

200°C (392°F)

4.00 V

4.00 kΩ

400°C (752°F)

1.96 V

0.64 kΩ

600°C (1, 112°F)

0.85 V

0.20 kΩ

⁽¹⁾	These data are reference values on the diagnosis tool.

Fig 2: Temperature Versus Resistance Graph

Courtesy of NISSAN NORTH AMERICA, INC.