Oil Temperature Sensor P0196 / P0197 / P0198 | How to Test and Replace

How to test and replace an oil temperature sensor; P0196 - P0197 and P0198. This sensor detects oil engine temperature and sends that message to the ecm. On the end of the sensor is a thermistor. The resistance decreases as temperature increases. You can quickly test the sensor via digital multi-meter and a hair dryer.

P0196 - Incorrect voltage is sent to the ecm when comparing signals from other sensors, such as the coolant temperature sensor and intake air temperature sensor.
P0197 - Low voltage; less than .17v
P0198 - High Voltage; greater than 4.7v
An average reading at idle is 1.0 - 1.4v

This vehicle happens to be a 2010 Subaru Impreza non-turbo.

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Note:
This video is being performed by an experienced tech. Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, use safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. If you don't think you can perform the job then be smart and don't. Carsntoys is a member of the Amazon Influencer Program.

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