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Home >> Infiniti >> 2000 >> Q45 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls - Theory & Operation) >> Computerized Engine Controls >> Input Devices >> EGR Temperature Sensor
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EGR Temperature Sensor

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2000 Nissan Xterra, 2000 Nissan Sentra, 2000 Nissan Quest, 2000 Nissan Pathfinder, and 2000 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

EGR temperature sensor, located near EGR valve, detects temperature of exhaust gases passing through EGR valve. Sensor has a thermistor which changes its resistance value in response to EGR flow. As temperature increases, resistance of sensor decreases. If absence of EGR flow is detected when ECM calls for EGR operation, a low flow fault is set in ECM memory. If EGR flow is detected during no flow conditions, a high flow fault is set in ECM memory.

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