P0522 OBD-II Trouble Code: Engine Oil Pressure Sensor/Switch Low Voltage

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Cost of diagnosing the P0522 code

P0522 is a diagnostic trouble code (DTC) for "Engine Oil Pressure Sensor/Switch Low Voltage". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
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Check Engine Light

P0522 code definition

P0522 is the universal OBD-II code for Engine Oil Pressure Sensor/Switch Low Voltage. Related codes include P0520, P0521, P0523, and P0524.

What the P0522 code means

The oil pressure sensor sends a message to the PCM (Powertrain Control Module), which gets transmitted in the form of a voltage reading. A vehicle will store P0522 when that message tells the PCM that the sensor is indicating too low of an oil pressure value.

What causes the P0522 code?

The possible sources of this fault code include:

  • A faulty oil pressure sensor
  • An open or short in the sensor circuit wiring
  • A faulty connector or bad connection in the oil pressure sensor circuit
  • Low oil, the wrong type of oil, a blockage in an oil passageway

What are the symptoms of the P0522 code?

Aside from the vehicle storing this trouble code, you may notice a low oil pressure gauge reading or illuminated oil pressure light. The engine may fail to start, or the vehicle may stall in the middle of driving.

How does a mechanic diagnose the P0522 code?

Your technician may perform the following steps to diagnose this problem:

  • Clearing all codes and test driving the vehicle, observing live scanner data to see if the code returns

  • Inspecting the oil level and condition

  • Checking that the correct oil is being used and that the oil filter does not have a blockage

  • Visually inspecting the oil pressure sensor or sending unit’s wiring and connectors to check for damage, loose wires, or burned areas

  • Using an ohmmeter to test the oil pressure sensor to ensure the voltage matches manufacturer specifications

  • Checking the oil pressure with a mechanical oil pressure gauge, as well as comparing that reading to the sensor reading

Common mistakes when diagnosing the P0522 code

While oil pressure sensor replacement is often an appropriate fix, if the damage is too far gone this can be merely a bandage on a problem that has already affected the engine. Replacing the sensor may get rid of the code but if the more serious issues aren’t addressed then the fix won’t last.

How serious is the P0522 code?

This fault code can be minor, or very serious, depending upon the source of the problem. In many cases the malfunction is electrical in nature – either a short in the wiring or other damage interrupting the signal, or a bad oil pressure sensor/sending unit. If, however, the code has been stored for a long period of time and the oil has actually been low during this time, catastrophic engine damage could occur.

What repairs can fix the P0522 code?

Things your mechanic may do to address this code include:

Additional comments for consideration regarding the P0522 code

Whenever a vehicle shows indications of an oil pressure problem, you should always take it seriously and begin investigating the cause immediately. Checking the oil for level and color is a quick, easy way to make sure that there isn’t an actual oil shortage if your oil light has come on.

The good news is that P0522 most often reflects an electrical or sensor/sending unit problem, and as soon as the issue is rectified the code – as well as the low oil gauge indicator – should resolve itself. Checking your oil, and having it changed, routinely can prevent serious engine problems even if you should encounter this code.

Need help with a P0522 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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Check Engine Light
P0522

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Scott

31 years of experience
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Scott
31 years of experience
Very nice friendly mechanic. Very helpful with with questions that I had. Offered good advice. He explained some of the problems to me and what should be the next to resolve it before spending unnecessary monies. This was my first time using him and will not be my last. I would recommend him to anyone. Especially women because he does not seem to take advantage of our knowledge of not knowing things about cars.
2001 HYUNDAI ELANTRA - CHECK ENGINE LIGHT IS ON - PARKVILLE, MARYLAND

Peter

40 years of experience
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Peter
40 years of experience
Peter was early as indicated on most of his other reviews, and professional. Took the time to explain everything out as he worked, and was able to diagnose the main issue, although I have to schedule that repair for another day. We got plenty of other work done, and in shorter time than was originally booked. He was also able to discuss upcoming work needed for maintaining a healthy car. I will be booking him again for the other issue as soon as the quote comes back. My mail carrier saw what was happening, and asked for a business card, already beginning the referrals!
2001 BMW 740IL - CHECK ENGINE LIGHT IS ON - PHOENIX, ARIZONA

Brian

27 years of experience
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Brian
27 years of experience
My appointment was at 4 pm with Bryan He showed up early which was nice he did a thorough check of my car and he explained to me where I can understand , customer service experience with Brian was awesome thank you Brian for being patient with me asking a thousand questions.
2002 BMW 330I - CHECK ENGINE LIGHT IS ON - HUTTO, TEXAS

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5 years of experience
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Cody
5 years of experience
He is a great guy, he took time to diagnosed my truck and explained along what the issues was.
2007 FORD F-150 - CHECK ENGINE LIGHT IS ON - CROWLEY, TEXAS

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