The P0195: Engine Oil Temperature Sensor Malfunction refers to an issue with the engine oil temperature sensor circuit. This code is triggered when there is a problem with the sensor responsible for monitoring the engine oil temperature, which could be caused by a faulty sensor, wiring issues, or a malfunctioning Powertrain Control Module (PCM). In simple terms, when this code appears, it indicates that the engine oil temperature is not being accurately monitored, which can lead to engine performance issues.
P0195 – Quick Overview
| Meaning | P0195: Engine Oil Temperature Sensor Malfunction |
| Is it serious? | Yes, this code can be serious as it may lead to incorrect engine oil temperature readings, potentially resulting in engine overheating or poor performance. |
| Possible causes | – Faulty engine oil temperature sensor – Wiring issues such as shorts or opens – Sensor connector problems – Faulty PCM |
| How to diagnose? | – Inspect the engine oil temperature sensor for proper operation. – Check wiring and connections for continuity. – Test the sensor using a scan tool. – Replace or repair any faulty components. |
P0195 Meaning
The P0195: Engine Oil Temperature Sensor Malfunction means that there is an issue with the sensor that measures the temperature of your engine oil. This could be due to a faulty sensor, wiring issues, or a problem with the car’s computer (PCM). When this code shows up, it suggests that the sensor isn’t providing accurate readings, which can affect engine performance and may lead to overheating.
Step-by-step diagnostic guide
Follow the outline procedure to diagnose this DTC by eliminating possible causes one by one.
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check if there are any other related codes present. These might give additional clues about the problem. | OBD-II Scanner |
| Inspect the Engine Oil Temperature Sensor | Visually inspect the engine oil temperature sensor for any signs of damage, corrosion, or disconnection. Ensure it is securely attached and operating correctly. | Flashlight, Safety Gloves |
| Check Wiring and Connections | Carefully inspect the wiring and connectors leading to the sensor for any signs of shorts, opens, or continuity issues. Ensure all connections are secure and intact. | Flashlight, Multimeter |
| Test the Sensor Using a Scan Tool | Use a scan tool to monitor the engine oil temperature sensor readings and compare them with manufacturer specifications. | Scan Tool, Manufacturer’s Specifications |
| Repair or Replace Damaged Components | If any wiring or connectors are found to be damaged or defective, repair or replace them. Ensure all connections are stable and free from corrosion or dirt. | Wire Strippers, Electrical Tape, Replacement Wires/Connectors |
| Check the PCM (Powertrain Control Module) | Inspect the PCM and its connections for any signs of damage or malfunction. If the PCM is suspected to be faulty, it may need reprogramming or replacement. | OBD-II Scanner, Multimeter |
| Clear the Code and Test Drive | After completing the necessary repairs, clear the P0195 code using the OBD-II scanner. Take the vehicle for a test drive to ensure the issue is resolved and the code does not return. | OBD-II Scanner, Vehicle Owner’s Manual |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P0195 code has not reappeared. If the code returns, further diagnosis may be required. | OBD-II Scanner |
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I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko