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The Reasons for Oil Pressure Light On After Oil Change

The oil pressure light on after oil change is a sign of concern. You have to understand that the light indicates the oil pressure, not the oil level. If this happens, it’s bad for several reasons. Low pressure means the critical joints and friction surfaces of the engine are not enough lubricated, which will lead to serious damage.

The Reasons for Oil Pressure Light On After Oil Change

There could still be low oil pressure after oil change. If this happens, you should pull the car off and turn off the engine as quickly as possible. Let’s find out the reasons that cause the problem:

low oil pressure after oil change
Incorrect oil level could trigger the light. (photo source: Error Code Guy @ Youtube)

Incorrect Oil Level

If the light comes on after an oil change, the wrong level of oil might be the culprit. Just like the low oil level, an oil level too high could be the reason for an out-of-range oil pressure. If you are positive that you have used the fuel with the correct viscosity rating, check the level. If it’s above the fuel line, send it below the line.

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Not Lubricating the Oil Filter

It’s the standard procedure to put some oil in the filter before its installation. The oil pressure can go down if you don’t lubricate the oil filter. Don’t do the mistake of revving the engine during this time to pressurize the system. What you should do is to run the starter after removing the spark plugs. When the system gains pressure, reinstall the plugs and kick off the engine.

Dirty Oil

Not changing the oil at the due time and poor maintenance may lead to sludge buildup in the engine. It will not wash out even if you just change the fuel. The deposit deprives the sensitive engine parts of normal oil pressure. As a result, you see the oil pressure light on after oil change.

oil pressure light on after oil change
Dirty oil could build up sludge in the engine. (photo source: StockSolutions | Getty Images/iStockphoto)

Damaged Pressure Sensor

If the light is still on after getting everything right, measure the pressure by using a test gauge. If it shows that pressure is fine, the problem could be with the sensor and circuit that operates the light. The sensor is attached to the engine and it has a probe that goes into an oil passage. Sometimes, dirt or any other particle gets into the probe and triggers the sensor to switch the light on. The sensor is easy to replace and does not cost much.

Conclusion

The oil pressure light on after oil change is a serious problem. It means that there is no oil flowing inside the engine parts. If you keep running the car in this condition, the whole engine could be damaged. So, when the light is on, tow it to a mechanic to find out the problem and fix it.

7 Comments
  1. Gary De La Cruz says

    Information,that will save on consequential damage bills, pertaining to oil and oil pressure thank you for this informative and useful article.

    Gary

  2. PEDRO says

    I HAVE 2007 330i E90 . MY OIL LIGHT IS CONSTANTLY RED OIL IS INACTIVE DUE TO THIS. I HAVE CHANGED MY OIL SENSOR ,OIL PRESSURRE SWITCH . IT HAS BEEN TO 2 BMW AGENTS WHERE THEY HAVE DONE A COMPLETE DIAGONSTICS ON THE CAR CHECKING COMPUTER BOX BUZZ LINE ETC….. AT R1500.00 A POP. IT HAS BEEN TO EXTERNAL ECU SPECIALISTS NOONE SEEMS TO TELL ME WHAT THE PROBLEM IS. I HAVE BEEN DRIVING LIKE THAT FOR 18 MONTHS EVERYDAY NO PROBLEMS. THE CAR HAS DONE LONG DISTANCES IN THIS TIME DURBAN CAPE TOWN ETC. IF ANYONE HAS A SOLUTION FOR ME PLEASE HELP ME.

  3. Fuzile says

    I have a Toyota conquest 1.3 engine, i have been charging oil pumps, but the warning light it doesn’t come off, i don’t know the problem it is
    Iam using the car, and doesn’t give a problem, but it worries me this light although i all most using every day in 30km drive

    Help me please

    1. j.j says

      You need a gauge to test oil pressure. That will tell you if you have good or low oil pressure. You will need service repair information for your vehicle. This will give you oil pressure specifications for your exact vehicle (and likely oil pressure testing procedures). Without that, you will be lost, especially for a DIYer. Diagnosing is a nightmare for the inexperienced. You need this information to help you get on the right track. This is how pro mechanics do it. Shops pay a lot to use service info databases, but DIYer’s can use it for about $15 per vehicle for one year. Google “alldatadiy”. It’ll probably also have oil pump installation procedure and it’s possible that you’re missing an important step due to lack of resources/experience.

  4. Shirlita Burnham says

    I have recently placed a new crankshaft an bearing an oil seal an alos sercice my oil filtrer and oil in my mitsubushi colt 2002 today was the first day I dorve the car an it outted thn I strted it up again the the oil light cam on. what is the problem

  5. Murtadha says

    I have anew 2019 huonday tocsan 0km
    I jest drave 27 and this light tern on
    What you think is going on
    What should I do

  6. John B says

    After many weeks, I have found why we have no oil pressure on a Vauxhall astra after an oil change.
    Someone pulled out a broken oil filter and also pulled out a small plastic valve that controls the pressure.
    The plastic valve sits in the bottom of the oil filter housing, it stops oil flowing back to the sump.
    Be careful when removing old oil filters, the valve is not available separately and Vauxhall want £314 for oil filter housing.

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