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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (3.6L - DTCS P0160 To P0481) >> Diagnosis And Testing >> P0197-Engine Oil Temperature Sensor Circuit Low >> 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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