P0521 Code Definition
Engine Oil Pressure Sensor/Switch Range/Performance
What Does the Engine Code P0521 Mean?
Character "P" in the first position of Diagnostic Trouble Code (DTC) represents the powertrain system (engine and transmission), "0" in the second position means that this is a generic OBD-II (OBD2) DTC. "5" in the third character position in a DTC indicates that the vehicle speed, idle control and auxiliary inputs is experiencing a malfunction. The last two characters "21" is DTC number. OBD2 Diagnostic Trouble Code P0521 means that Engine Oil Pressure Sensor/Switch Range/Performance has been detected.
Repair How To's for related faults
Carly's expert mechanics have identified the following related fault codes. With the information for these fault codes it is often possible to identify and better repair your faulty part/system:
Contents
Carly Universal Scanner
What Is the Cause of P0521?
There can be several damages/failures causing the underlying problem of the OBD2 DTC P0521. To find the root cause of P0521, unlock the “Smart Mechanic" feature in the Carly app.
What Are the Symptoms of the Code P0521?
Symptoms of incorrect oil pressure
Oil pressure warning lamp lights up
Possibly a loud mechanical noise of the motor
Other fault memory for oil pressure
How much does it cost to diagnose P0521?
Visiting a car repair shop and letting them perform a diagnostics check can cost you $60-$100. For almost the same price you can get Carly. Its advanced features can cover what a professional automotive scanner that costs over $3,000 would, and more!
Carly OBD2 ScannerHow To Diagnose and Clear the Code P0521?
Performing a diagnostics check with a diagnostic scanner helps you identify a particular problem area that is outside the normal range and shows where a fault might be occurring. This helps you to detect errors before they cause more damage to your vehicle. In comparison to generic OBD devices that only provide OBD-level engine-related data, Carly can run advanced manufacturer-level diagnostics, check all your ECUs in your car (like ABS, airbag, multimedia) and get deeper insights. You can find additional information about the trouble code and understand the severity of the problem. With the new Smart Mechanic feature, you get additional professional insights and tips from expert mechanics. You are able to check components and their mechanics, find detailed repair tips, and learn about potential future damage. After you have fixed the problem you can easily clear the fault codes with Carly, too. Also, the diagnostic results are safely stored inside the app or as convenient PDF reports you can share with your friends or a mechanic.
Common Mistakes when diagnosing the P0521 code
The most common mistake is to look and try to fix each individual OBD2 (OBD-II) code without having a holistic understanding and approach. Understanding the interrelationship of different systems is crucial to determining the root cause of the problem and finding the right solution. The new Carly Smart Mechanic feature provides a look at the whole system, not just one individual code. Enable Smart Mechanic in your Carly app and get a holistic solution-focused approach when diagnosing the code P0521.
How Serious Is the Code P0521?
For now, this issue is not serious. Carly recommends you to check this issue on a regular basis and check if it gets worse later on.
How to fix the P0521 Code
P0521 is a generic fault code but the repair steps may vary depending on the root cause and the make/model of your vehicle. Get the Smart Mechanic in your Carly app to learn more and receive guidance.
Estimated Cost of Repair for the P0521 Code
The cost very much depends on the root cause of the issue. To find more information about causes, possible solutions, and potential repair costs, unlock “Smart Mechanic" content on the Carly app.
Get Carly NowLearn more about the P0521 Code
Function/task Engine oil pressure
The regulation of oil pressure in the engine is one of the most important tasks to keep the engine running smooth. Low oil pressure can quickly lead to engine damage. The engine oil pump generates the oil pressure. It is located in the oil pan of the engine. If the pump does not work properly any longer the result may be a lack of lubrication in the engine. If another part of the oil supply no longer works properly, the engine can go into an emergency mode. In emergency operation, there is always as much oil pressure as possible produced to prevent insufficient lubrication. The regulation is done using an oil pressure valve.
*Every car is unique. The Carly Features that your car supports depend on the model, build year, hardware, and software in the car. Plug the scanner in the OBD2 port, connect to the app, run your first diagnostics, and check which features are available for your car. Also, keep in mind that any information provided on this website is for informational purposes only and should be used at your own risk. Mycarly.com is not responsible for any errors or omissions, or for the results stemming from the use of this information.
