Skip the auto shop - Our mechanics make house calls

P0195 OBD-II Trouble Code: Engine Oil Temperature (EOT) Sensor Malfunction

Check Engine Light

P0195 code definition

Engine Oil Temperature (EOT) sensor malfunction

What the P0195 code means

The intended purpose of this code is to indicate if there is a problem with one of the circuits that monitor the engine oil temperature. However, if there are cooling system problems, the diagnostics designed to confirm the proper operation of the EOT can interpret the results as a failure in the EOT system. For this reason, cooling system issues need to be addressed first.

What causes the P0195 code?

  • Faulty engine oil temperature sensor
  • Problems with the EOT circuit
  • Faulty powertrain control module (PCM)
  • Cooling system malfunctions

What are the symptoms of the P0195 code?

The only symptom is a Check Engine Light. The EOT system is there to detect other problems with the vehicle. If the circuits of the EOT system has problems, it will be unable to monitor the oil temperature.

How does a mechanic diagnose the P0195 code?

A scan tool should be used to watch the sensor data, but most often, a resistance check is performed on the sensor and is the final test performed before determining the source of the P0195 code.

Common mistakes when diagnosing the P0195 code

  • A technician chooses to replace the sensor without checking the wiring going to and from the EOT sensor.

  • Failing to check the reference voltage the PCM provides to the sensor.

  • Not identifying problems with the cooling system that can mimic the data that sets this code.

How serious is the P0195 code?

The P0195 code by itself is not serious. It will not leave an owner stranded on the side of the road. However, if the system is left unrepaired, it is possible that severe engine damage can occur if the EOT system is unable to detect the problems that it is suppose to monitor for.

What repairs can fix the P0195 code?

Additional comments for consideration regarding the P0195 code

A P0195 code is a generic code that all manufacturers can use and must always retain the same definition. The P0196 code is most commonly used for a wider variety of vehicles.

Each manufacturer utilizes a different diagnostic method for the testing of this system. Even then, it is often used in performance vehicles that are designed to be driven very hard. Driving in racing conditions pushes the vehicle to the limits of its engineering beyond what an everyday driver will experience. For this reason, an EOT system is not common on most vehicles.

Need help with a P0195 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Auto Safety Tips
Driving is more than a way to get from point A to point B. Owning and driving a car can also be a highly enjoyable experience. Whether a person is driving...
P0291OBD-II Trouble Code: Cylinder 11 Injector Circuit Low
P0291 code definition When your vehicle’s PCM registers the P0291 code, it means that a voltage reading came from the fuel injector circuit – for cylinder number 11’s fuel injector –...
P0477 OBD-II Trouble Code: Exhaust Pressure Control Valve Low
P0477 code means that the PCM has detected an abnormally low voltage reading often due to the exhaust back pressure control valve circuit.


Related questions

Q: Gears slipping

Hello! The most common cause for transmission slippages is dirty or low transmission fluid. However, the code retrieved from the vehicle could indicate anything from a loose gas cap, to a bad exhaust system, so it would be best to...

Q: Not sure if I messed up my engine

Hello Sir, From the symptoms you describe it would not appear to me that you have messed up your engine. Usually a Check Engine Light that is flashing means that there is a problem with the vehicle that is...

Q: Vehicle having a hard time passing smog check.

The first thing to do would be to see what the failures are. The Check Engine light would have to be scanned to see why it is on and address the codes. Then once the light codes are fixed then...