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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (6.4L - DTCS P000B To P0201) >> Diagnosis And Testing >> P0198-Engine Oil Temperature Sensor Circuit High >> Theory Of Operation

Theory Of Operation

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The Oil Temperature Sensor is a variable resistor that measures the temperature of the engine oil. The Powertrain Control Module (PCM) supplies a 5-Volt reference and a ground to the sensors low reference signal circuit. When the oil temperature is low, the sensor resistance is high. When the oil temperature is high, the sensor resistance is low.

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