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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (3.6L - DTCS P0160 To P0480) >> 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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