Oil pressure sensor for VAZ-2112

If the oil pressure warning light on the dashboard of your car suddenly lights up, one of the reasons for this phenomenon may be not only low oil pressure, but also the failure of the sensor that registers the internal oil pressure, this engine lubrication element. How to replace it correctly, as well as how to diagnose its malfunction, you will learn below in our article. Fortunately, replacing this device does not take long.

The video describes the process of replacing the oil pressure sensor on the VAZ 2110-2112 family:

Where is the oil pressure gauge located?

The oil pressure sensor is marked with an arrow and a circle

On 16-valve VAZ-2112 engines, the sensor is located on the left side of the engine, on the end of the crankcase near the camshaft bearings.

Sensor purpose

The oil pressure sensor is designed to timely and accurately inform the driver about low lubrication pressure in an internal combustion engine. Therefore, as soon as the prompt detection of such a malfunction will allow you to avoid unnecessary problems and even major engine breakdowns as soon as possible. It's no secret that running an engine dry can cause very serious engine damage. But on the other hand, you should not immediately panic and draw hasty conclusions, it is enough to first check the sensor.

Errors in hasty conclusions

When the oil pressure light comes on, many car owners sound the alarm and begin to fix this problem in all but not the most important ways, but these include:

• Oil change and fuel filter replacement.
• Washes
• Carry out a pressure test.

But after this, the result does not happen! Therefore, always check the oil pressure sensor first, as this is the most common and common cause.

Sensor check

It is necessary to check the performance of the sensor in the following order:

1. We disassemble the sensor cable and support it on the "ground", it is possible on the motor housing.
2. Check if the indicator on the instrument panel lights up again.
3. If the lamp stops burning, then the wiring is good and you can proceed to the next step to dismantle the faulty sensor.
4. And if it continues to burn, then you need to “ring” the wires along the entire stage from the sensor to the instrument panel in order to detect a malfunction or short circuit in the circuit.

Replacing the oil pressure sensor

For work, we only need the key to "21".

We make the replacement as follows:

1. When a sensor is detected, we clean its surface and around from dirt and deposits so that some of the dirt does not get into the engine.
2. Then we disconnect the power supply from it. When disassembling, we inspect for defects and damage.
3. Using the key on “21”, we unscrew the sensor from the place of attachment. It is enough to tear off the nut and then unscrew it manually.
4. When disassembling, make sure that the aluminum O-ring also comes out of the socket.
5. Install the new sensor in reverse order. Pay attention to the quality of the connection.
6. Please note that the O-ring must be new when installed.
7. After tightening, we connect the cable to the sensor, after inspecting it for damage and signs of corrosion, if any, we clean it.

In such a simple way, the work of replacing the sensor can be considered completed.

Conclusions

It happens that after replacing a new sensor, oil begins to flow through it. Less often this is due to a poor fit, but more often it is due to a poor quality gasket or a poor quality sensor. Therefore, after the purchase, keep the cash receipt so that you can return the defective product.