AutoCodes – Mercedes-Benz – P0195 Mercedes-Benz

P0195 Mercedes-Benz Code - Engine Oil Temperature Sensor Malfunction

Quick Answer

The engine oil temperature sensor is used to detect the engine oil temperature. Common causes include Faulty Engine Oil Temperature sensor, Engine Oil Temperature sensor harness is open or shorted, Engine Oil Temperature sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0195 Mercedes-Benz indicates Engine Oil Temperature Sensor Malfunction.
Common causes: Common causes include Faulty Engine Oil Temperature sensor, Engine Oil Temperature sensor harness is open or shorted, Engine Oil Temperature sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 4,620

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0195 Mercedes-Benz Description

The engine oil temperature sensor is used to detect the engine oil temperature. The sensor modifies a voltage signal from the ECM. The modified signal returns to the ECM as the engine oil temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

OBDII Code P0195 Mercedes-Benz - Engine Oil Temperature Sensor Malfunction - AutoCodes.com — P0195 Mercedes-Benz Code - Engine Oil Temperature Sensor Malfunction

What does this mean?

What are the Possible Causes of the DTC P0195 Mercedes-Benz?

Faulty Engine Oil Temperature sensor
Engine Oil Temperature sensor harness is open or shorted
Engine Oil Temperature sensor circuit poor electrical connection

How to Fix the DTC P0195 Mercedes-Benz?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0195 Mercedes-Benz code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0195 Mercedes-Benz code?

Need more information on how to fix the P0195 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0195 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0195 Mercedes-Benz Code

1. What are the common symptoms of an engine oil temperature sensor malfunction (OBDII code P0195) in a Mercedes-Benz?

- Common symptoms include inaccurate oil temperature readings on the dashboard, illuminated warning lights, and potential engine performance issues.

2. What are the possible causes of the engine oil temperature sensor malfunction in a Mercedes-Benz?

- Causes may include a faulty temperature sensor, damaged wiring or connectors, low engine oil levels, or issues with the engine control module.

3. How can I diagnose the engine oil temperature sensor malfunction in my Mercedes-Benz?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code (P0195), testing the sensor's resistance, and inspecting the sensor and its wiring for any visible damage.

4. Can I continue driving my Mercedes-Benz with the engine oil temperature sensor malfunction?

- It is not recommended to continue driving with this issue, as inaccurate oil temperature readings can lead to potential engine damage or performance issues.

5. How can I repair the engine oil temperature sensor malfunction in my Mercedes-Benz?

- Repair usually involves replacing the faulty oil temperature sensor, repairing or replacing damaged wiring or connectors, and clearing the trouble code with an OBDII scanner.

6. Are there any DIY tips for troubleshooting the engine oil temperature sensor malfunction in a Mercedes-Benz?

- DIYers can start by checking the sensor's wiring and connectors for any visible damage, ensuring proper oil levels, and using an OBDII scanner to reset the trouble code after repairs.

7. Will resetting the OBDII trouble code P0195 fix the engine oil temperature sensor malfunction in my Mercedes-Benz?

- Resetting the code may temporarily clear the warning light, but it is crucial to diagnose and repair the root cause of the issue to prevent further problems.

8. How long does it typically take to replace the engine oil temperature sensor in a Mercedes-Benz?

- The replacement process can vary depending on the model and location of the sensor, but it generally takes around 1-2 hours for a professional mechanic to complete the job.

9. Does the engine oil temperature sensor malfunction affect fuel efficiency in a Mercedes-Benz?

- Yes, a malfunctioning sensor can lead to incorrect fuel calculations by the engine control module, potentially affecting fuel efficiency and overall performance.

10. Is it necessary to recalibrate or reprogram anything after replacing the engine oil temperature sensor in a Mercedes-Benz?

- In most cases, recalibration or reprogramming is not required after sensor replacement, but it's recommended to clear the trouble code and perform a test drive to ensure proper functionality.