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Home >> Nissan-Datsun >> 2005 >> Altima SE-R, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control System - VQ35DE >> DTC P0128: Thermostat Function >> Component Inspection >> Engine Coolant Temperature Sensor
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Engine Coolant Temperature Sensor

Check resistance as shown in the figure.

Fig 1: Checking Resistance
G02525691Courtesy of NISSAN MOTOR CO., U.S.A.

Reference data 

RESISTANCE CONDITION

Temperature °C (°F) Resistance kΩ
20(68) 2.1 - 2.9
50(122) 0.68 - 1.0
90(194) 0.236 - 0.260

If NG, replace engine coolant temperature sensor.

Fig 2: Resistance And Temperature Graph
G02525692Courtesy of NISSAN MOTOR CO., U.S.A.