2021 Volvo S90 Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your 2021 Volvo S90 and How to Address Them Promptly

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2021 Volvo S90 is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2021 Volvo S90 is leaking oil?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the steps to diagnose the oil leak in a 2021 Volvo S90?

To effectively diagnose an oil leak in your 2021 Volvo S90, begin with a thorough visual inspection of the engine bay and the area beneath the vehicle, focusing on the oil pan, which is a common leak source. Next, check the oil level using the dipstick; a significant drop may indicate a leak. It's essential to examine the oil filter and drain plug for any signs of oil seepage, as these areas can often be overlooked. Additionally, inspect the gaskets and seals around the engine for any wear or damage that could lead to leaks. If the source of the leak remains unclear, consider adding UV dye to the engine oil; this will help you pinpoint the leak when illuminated with a UV light. For a more comprehensive assessment, performing a pressure test can reveal leaks that may not be visible under normal conditions. If these methods do not yield results, consulting a qualified mechanic is advisable to ensure a thorough diagnosis and repair. By following this structured approach, you can systematically identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2021 Volvo S90?

When dealing with oil leaks in a 2021 Volvo S90, it's essential to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can occur over time due to exposure to heat and engine vibrations, leading to leaks at the oil pan's edges. Another potential source of leaks is the valve cover gasket; if this component becomes worn or damaged, it can allow oil to escape from the top of the engine, creating visible drips. Additionally, the oil filter housing gasket is another critical area to inspect, as a faulty gasket here can lead to significant oil loss. Oil cooler lines, which transport oil to and from the cooler, can also develop leaks due to wear, resulting in oil seepage. Lastly, damaged oil seals, particularly crankshaft and camshaft seals, can contribute to leaks as they age and lose their integrity. Regular inspections and timely maintenance can help identify these issues early, allowing DIY enthusiasts to address them before they escalate into more significant problems.

How urgent is it to address the oil leak in my 2021 Volvo S90?

Addressing an oil leak in your 2021 Volvo S90 is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. Oil leaks can lead to a rapid decrease in oil levels, which compromises the lubrication of essential engine components. This lack of lubrication can result in severe engine damage over time, leading to costly repairs that could have been easily avoided. Moreover, an oil leak can cause the engine to overheat, as insufficient lubrication prevents the engine from operating efficiently. This overheating not only risks engine failure but also poses a significant safety hazard, as leaking oil can drip onto hot engine parts, increasing the risk of fire. By addressing the oil leak promptly, you not only safeguard the performance and longevity of your vehicle but also ensure your safety on the road. Ignoring this issue can lead to dire consequences, making it imperative to take action as soon as possible.

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