AutoCodes – Mercedes-Benz – P0522 Mercedes-Benz

P0522 Mercedes-Benz Code - Engine Oil Pressure Sensor/Switch Circuit Low Voltage

Quick Answer

The PCM continuously monitors the engine oil pressure. Common causes include Low oil level or motor mechanical fault, Faulty Oil Pressure sensor, Oil Pressure Sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0522 Mercedes-Benz indicates Engine Oil Pressure Sensor/Switch Circuit Low Voltage.
Common causes: Common causes include Low oil level or motor mechanical fault, Faulty Oil Pressure sensor, Oil Pressure Sensor harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 17,080

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0522 Mercedes-Benz Description

The PCM continuously monitors the engine oil pressure. The Oil Pressure Sensor/Switch sends a signal to the PCM when the engine is running.

OBDII Code P0522 Mercedes-Benz - Engine Oil Pressure Sensor/Switch Circuit Low Voltage - AutoCodes.com — P0522 Mercedes-Benz Code - Engine Oil Pressure Sensor/Switch Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0522 Mercedes-Benz?

Low oil level or motor mechanical fault
Faulty Oil Pressure sensor
Oil Pressure Sensor harness is open or shorted
Oil Pressure Sensor circuit poor electrical connection

How to Fix the DTC P0522 Mercedes-Benz?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0522 Mercedes-Benz code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0522 Mercedes-Benz code?

Need more information on how to fix the P0522 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0522 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0522 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0522 in a Mercedes-Benz related to the Engine Oil Pressure Sensor/Switch Circuit Low Voltage?

- Common symptoms include illuminated Check Engine Light, low oil pressure warning light, engine oil pressure gauge reading zero, and potential engine performance issues.

2. What are the possible causes of OBDII code P0522 in a Mercedes-Benz?

- The code P0522 can be triggered by a faulty engine oil pressure sensor/switch, low engine oil level, clogged oil filter, wiring issues, or a problem with the engine control module.

3. How can I diagnose the cause of OBDII code P0522 in my Mercedes-Benz?

- Diagnosing code P0522 may involve checking the engine oil level, inspecting the oil pressure sensor and wiring for damage, testing the oil pressure switch, and using a scan tool to monitor oil pressure readings.

4. Can I continue driving my Mercedes-Benz with OBDII code P0522 present?

- It is not recommended to continue driving with the code P0522 active, as low oil pressure can lead to serious engine damage if not addressed promptly.

5. How can I repair OBDII code P0522 in my Mercedes-Benz?

- Repairing code P0522 may involve replacing the engine oil pressure sensor/switch, addressing any oil leaks, ensuring proper oil level and quality, and clearing the code with a diagnostic tool.

6. Are there any DIY tips for resolving OBDII code P0522 in a Mercedes-Benz?

- DIY tips include checking the engine oil level regularly, inspecting for oil leaks, ensuring proper oil filter maintenance, and following the manufacturer's recommended oil change intervals.

7. What are the potential long-term effects of ignoring OBDII code P0522 in a Mercedes-Benz?

- Ignoring code P0522 can lead to engine damage due to insufficient lubrication, increased wear on engine components, and potential engine failure if the issue is not addressed in a timely manner.

8. Can extreme weather conditions impact the likelihood of triggering OBDII code P0522 in a Mercedes-Benz?

- Yes, extreme temperatures can affect engine oil viscosity and pressure, potentially leading to issues with the oil pressure sensor/switch and triggering code P0522 in colder or hotter climates.

9. Is it necessary to reset the Check Engine Light after repairing OBDII code P0522 in a Mercedes-Benz?

- Yes, it is important to clear the code and reset the Check Engine Light using a diagnostic tool after addressing the underlying issue causing code P0522 to ensure proper functioning of the vehicle's onboard systems.

10. How can regular maintenance help prevent OBDII code P0522 from occurring in a Mercedes-Benz?

- Regular maintenance, such as timely oil changes, using the correct oil viscosity, checking for oil leaks, and inspecting the engine oil pressure sensor, can help prevent issues leading to code P0522 in a Mercedes-Benz.