P0195 Engine Oil Temperature Sensor Malfunction

Description and meaning of DTC p0195

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles that have an engine oil temperature sensor (Ford Powerstroke, Chevrolet GMC Duramax, Dodge, Jeep, Audi, etc. ). Although generic, the exact repair steps may vary depending on make/model. The engine oil temperature (EOT) sensor produces a signal that is used by the powertrain control module (PCM) to calculate fuel quality, injection timing and glow plug operation. The EOT signal is also compared to other temperature sensors such as the intake air temperature (IAT) sensor and engine coolant temperature (ECT) sensor for diagnostic purposes. EOT sensors are often found in diesel applications. EOT sensors receive a reference voltage (usually 5 volts) from the PCM. They then vary their internal resistance in relation to engine oil temperature to send a return voltage signal to the PCM. EOT sensors are a type of negative temperature coefficient (NTC) thermistor. This means internal resistance of the sensor is inversely proportional to the oil temperature. The EOT sensor signal voltage goes down when the engine oil temperature goes up and vice versa. Code P0195 is set when the PCM detects a malfunction in the engine oil temperature sensor circuit. Related engine oil temperature sensor trouble codes include:P0196 Engine Oil Temperature Sensor Range/PerformanceP0197 Engine Oil Temperature Sensor LowP0198 Engine Oil Temperature Sensor HighP0199 Engine Oil Temperature Sensor Intermittent

p0195 diagnostic trouble code symptoms

The severity of these codes is moderate to severe. In some cases, these codes set along with coolant temperature codes, can indicate an engine overheat condition. It’s a good idea to address this code as soon as possible. Symptoms of a P0195 engine code may include: Illuminated Check Engine Light

DTC p0195 - possible causes

Possible causes for this P0195 code include: Faulty engine oil temperature sensorEngine cooling system problemsWiring problemsFaulty PCM

How to fix OBD-II diagnostic trouble code p0195

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