How To Clean Oil Pressure Sensor? Easy Tips And Tricks

An oil pressure sensor is sometimes called an oil pressure switch (OPS) or oil pressure sending unit. The function of this device is to monitor your engine oil pressure. You should keep this oil pressure at a specific level to ensure that oil reaches all your important engine parts. That’s why you should be alert about it to ensure your engine is well positioned.

But how to clean oil pressure sensors most people want to learn. Actually, when you notice any issues it’s best to replace this sensor instead of cleaning it.  Since it’s a very essential part of your engine, don’t forget to clean it if you find dirt, debris or sludge.

How To Clean Oil Pressure Sensor

What Is The Function Of The Oil Pressure Sensor?

An oil pressure sensor activates a warning light on your dash when your oil pressure is out of line with set levels. This simple tool is made of a spring-loaded switch and a diaphragm. The diaphragm accepts oil and is designed to remain open at a fixed pressure level.

The pressure pushes the diaphragm into the switch and turns off the warning light. Additionally, if the pressure level is not fulfilled, this switch triggers a light on your dash. Generally speaking, the oil pressure sensor detects the low oil pressure of your engine. As we know, low oil pressure causes many problems, like faulty oil pumps, clogged oil filters, and more. And this sensor warns you about this problem before it causes severe damage.

Oil Pressure Sensor Symptoms:

It’s essential to work correctly with this oil pressure sensor. It’s because it directly impacts your car’s acceleration and starting processes. Hence, if this sensor has a problem, the ECU can’t control the engine properly. A faulty oil pressure can manifest itself in different symptoms. The oil pressure sensor symptoms are:

The Oil Pressure Sensor Light Is On

The first and most common symptom of bad oil pressure symptoms is the oil pressure light on your vehicle’s dashboard. You can see this light like a drop of oil. If you see the warning light is on and the oil is still at a reasonable level, it has a faulty sensor. A defective sensor can’t give you a correct result. Sometimes, it indicates that your oil pressure isn’t at the recommended level.

Oil Pressure Gauge Malfunction

Currently, most recent cars come with an oil pressure gauge that provides oil pressure information to the drivers. Therefore, if your meter shows low-pressure levels or fluctuating readings, there is a faulty pressure system. This affects system performance, decreasing the accuracy of displayed results.

This is a common symptom of an oil pressure sensor problem. Remember that a proper oil pressure gauge will display a stable pressure within the normal range.

Check Engine Light

The engine control unit (ECU) monitors various sensors to ensure your engines operate within optimal parameters. Thus, if the ECU detects an oil pressure sensor problem, it triggers the “check engine” light. The reason is that, in this way, it tries to alert the driver of a possible problem.

If the oil pressure sensor is faulty, it may send the wrong signal or no signal. As a result, the ECU may analyze this as an oil pressure difficulty and trigger the “Check Engine” light. Nonetheless, the “Check Engine” light can appear for various reasons. So, it’s best to have trusted mechanics diagnose it to retrieve specific error codes stored in the ECU.

Oil Leaks

A bad oil pressure switch can cause engine oil leaks. Many problems can cause oil leaks, so a professional inspection is in order.

How To Clean Oil Pressure Sensors?

Before cleaning your oil pressure, it’s best to know some vital information:

Well, if you want to clean your oil pressure sensor, replacing it instead of cleaning it is recommended. Nevertheless, you can use contact or curb cleaners to clean your oil pressure sensor. In fact, you can clean your filter screen with a low oil pressure or break cleaner. Please don’t soak the sensor in a brake cleaner; dry it quickly.

Some manufacturers have technical bulletins with procedures to clean the oil pressure sensor. When removing the sensor, wear safety glasses and disconnect the negative battery cable. Let’s know the cleaning procedure for the oil pressure sensor:

  1. This diaphragm works to control the variable resistance. So you connected wire, and the more pressure is given, the less resistance there is, making the gauge go higher. An open circuit means it’s not reading still. The best test to verify this is to simply disconnect the gauge from the wire and cut it short to clean the block metal.
  2. When your wire disconnects, you should show 0; with grounded, it should show max 80 or so.
  3.  Unfortunately, if you don’t see this behavior, that means you have a cable or gauge problem.
  4. Then you need to find out the wire, and you can test it with ohms. The reason is to see if there is any break from the gauge to the sender.
  5. Unscrew it and clean it with a seafoam. It is pipe thread, so you should use Teflon pipe tape when reinserting.

Will Seafoam Clean Oil Pressure Sensor?

Generally speaking, adding Seafoam to clean the oil pressure sensor is definitely worth a try! You can add 1.5 ounces of sea foam for every quart of oil in the crankcase. If your high-mileage car is older, you should use Seafoam high mileage to clean the oil pressure sensor. Moreover, Seafoam does an excellent job cleaning off fuel glue, varnish residue, etc. So, if it’s physically clogged or something like that, it can solve the problem.

Most importantly, If the fuel level sensor is electrically faulty or physically broken, sea foam won’t help. In addition, a seafoam crankcase treatment needs at least 100 drive miles to perform and clean. Please note that it’s not used to track the exact cause of your engine oil problem.

How To Clean Oil Pressure Sensor Chevy Silverado?

Are you looking for the procedure for cleaning a Chevy and a Chevy Silverado 1500? Let’s know the truth. Actually you can’t clean a bad oil pressure sensor; you can replace it. If you don’t get any alarms and if your engine stops running. It can be the reason for a defective oil pressure sensor cable or gauge.

Besides this, a zero reading on the indicator also indicates a bad oil pressure sensor. Alternatively, if your oil pressure sensor is not going wrong and there is only sludge and debris, you can clean it. So, to remove the clogging sludge, you can use cleaner. To clean the oil pressure sensor of your Chevy Silverado, you need to spray and wrap it up with a cloth.

You can see an oil pressure sensor behind the intake age on the motor. Use an ⅜ inch ratchet on an ½ inch ratchet with a 12-inch extension to close it. So it will come off quickly. And our effort will be helpful for those people who have a measuring error.

What Oil Pressure Sensor Socket Do You Need?

Over time, oil pressure switches will leak. When this happens, they send the wrong information to the computer, and you end up with a bright “oil” light. First, it’s best to do a visual check of the switch. If you see fresh oil (and it’s not leaking from other ingredients above it), it’s toast. Just replace it.

Even the old unit can still go wrong. If you buy a new oil pressure switch, it will cost $15. That’s why it’s really cheaper to replace it yourself than to pay a mechanic. Specially, to replace the oil pressure sensor, you will require a particular socket. None of your current deep sockets will fit over the oil pressure sensor. This is why you should buy a single dispatch unit.

Final Word:

How to clean oil pressure sensor is the rear question. Basically, people say that you can try to clean, but it will not work better. Ultimately, It will take a little while to clear so you can try it. If it works, you’ve saved some money. If not, you’d better change the sender. On the other hand, if you want to clean, you just clean the oil sender’s flat spade.

Therefore, removal has little value. Mainly, it can be removed and installed without going under the car. Checking and cleaning the spade and its mating connector with spray contact cleaner wouldn’t hurt. Hopefully, this is the article which you are looking for. Thanks for reading.

Check: How to Build Oil Pressure without Starting Car


I am Engr. Z Eusuf Lubricant Specialist, Mechanical Engineer & has been working with engine lubricants for a long time and knows what makes them work best. I can help you find the right oil for your needs, and I have tips on how to keep your engine running at its best.