AutoCodes – Generic – P0522

P0522 Code - Engine Oil Pressure Sensor Circuit Low Voltage.

Quick Answer

The engine oil pressure sensor changes voltage based on the engine oil pressure. Common causes include Low oil level, Faulty Engine Oil Pressure Sensor, Engine 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 indicates Engine Oil Pressure Sensor Circuit Low Voltage..
Common causes: Common causes include Low oil level, Faulty Engine Oil Pressure Sensor, Engine 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 22,321

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 30, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0522 Description

The engine oil pressure sensor changes voltage based on the engine oil pressure. The engine oil pressure sensor is a 3-wire sensor comprising the signal circuit, the low reference circuit, and the 5 V reference circuit. The Engine Control Module (ECM) supplies 5 V to the engine oil pressure sensor via the 5 V reference circuit and provides ground via the low reference circuit. The ECM monitors the signal circuit of the engine oil pressure sensor to determine if the engine oil pressure sensor voltage is within the normal operating range of approximately 1 - 4 V. When the engine oil pressure is high, the engine oil pressure sensor voltage is high, and the ECM senses a high signal voltage. When the engine oil pressure is low, the engine oil pressure sensor voltage is low, and the ECM senses a low signal voltage. The ECM sends the engine oil pressure information to the instrument cluster via serial data. The instrument cluster will illuminate or display the engine oil pressure indicator when the engine oil pressure is low. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the engine oil pressure sensor signal circuit is less than 0.2 V for greater than 10 s.

OBDII Code P0522 - Engine Oil Pressure Sensor Circuit Low Voltage. - AutoCodes.com — P0522 Code - Engine Oil Pressure Sensor Circuit Low Voltage.

What does this mean?

What are the Possible Causes of the DTC P0522?

Low oil level
Faulty Engine Oil Pressure Sensor
Engine Oil Pressure Sensor harness is open or shorted
Engine Oil Pressure Sensor circuit poor electrical connection
Engine Mechanical Problem
Faulty Engine Control Module (ECM)

How to Fix the DTC P0522?

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 does this mean?

Code Tech Notes

DTC P0521 can be set if engine oil pressure is outside the calculated engine oil pressure model stored in the engine control module. This can be an indication of mechanical engine issues causing lower than expected engine oil pressure.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0522 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

P0522 Acura — Engine Oil Pressure Sensor Circuit Low Voltage
P0522 Buick — Engine Oil Pressure Sensor Circuit Low Voltage.
P0522 Cadillac — Engine Oil Pressure Sensor Circuit Low Voltage
P0522 Chevrolet — Engine Oil Pressure Sensor Circuit Low Voltage
P0522 Chrysler — Engine Oil Pressure Sensor/Switch Circuit Low Voltage
P0522 Dodge — Engine Oil Pressure Sensor/Switch Circuit Low Voltage
P0522 GMC — Engine Oil Pressure Sensor Circuit Low Voltage
P0522 Honda — Engine Oil Pressure Sensor Circuit Low Voltage
P0522 Jeep — Engine Oil Pressure Sensor/Switch Circuit Low Voltage
P0522 Mercedes-Benz — Engine Oil Pressure Sensor/Switch Circuit Low Voltage
P0522 Mitsubishi — Oil Pressure Too Low
P0522 Pontiac — Engine Oil Pressure Sensor Circuit Low Voltage
P0522 Saturn — Engine Oil Pressure Sensor Circuit Low Voltage

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 Code

1. What are the common symptoms of OBDII code P0522 (Engine Oil Pressure Sensor Circuit Low Voltage)?

The common symptoms of P0522 include low oil pressure warning light on the dashboard, engine stalling or running rough, and potential loss of engine power.

2. What are the possible causes of OBDII code P0522?

Possible causes of P0522 include a faulty oil pressure sensor, low engine oil level or pressure, damaged wiring or connectors in the oil pressure sensor circuit, or a malfunctioning engine control module (ECM).

3. How can I diagnose the cause of OBDII code P0522?

Diagnosing P0522 typically involves checking the engine oil level and pressure, inspecting the oil pressure sensor and its wiring for damage, and using a scan tool to monitor oil pressure sensor data and ECM communication.

4. Can I still drive my vehicle with OBDII code P0522?

It is not recommended to drive your vehicle with code P0522 as it can lead to serious engine damage due to potential low oil pressure. It's best to address the issue promptly to avoid further complications.

5. How can I repair OBDII code P0522?

Repairing P0522 may involve replacing the oil pressure sensor, correcting low engine oil level or pressure issues, repairing or replacing damaged wiring or connectors, or reprogramming the ECM if necessary.

6. Can a DIY enthusiast fix OBDII code P0522 at home?

Some aspects of diagnosing and fixing P0522 can be done by DIY enthusiasts with the right tools and knowledge. However, if you're not familiar with automotive repairs, it's best to consult a professional mechanic for accurate diagnosis and repair.

7. Is OBDII code P0522 a serious issue?

Yes, P0522 can be a serious issue as it indicates potential low oil pressure, which can lead to engine damage if not addressed promptly. Ignoring this code can result in costly repairs or even engine failure.

8. How much does it cost to repair OBDII code P0522?

The cost of repairing P0522 can vary depending on the underlying cause. On average, you can expect to pay anywhere from $100 to $300 for parts and labor, but prices may vary based on your vehicle's make and model.

9. Can a faulty oil pressure gauge trigger OBDII code P0522?

Yes, a faulty oil pressure gauge can sometimes trigger P0522 if it sends incorrect signals to the ECM, causing it to detect low voltage in the oil pressure sensor circuit. It's important to verify the gauge's accuracy during diagnosis.

10. How often should I check my engine oil level to prevent OBDII code P0522?

It's recommended to check your engine oil level regularly, ideally every time you fill up with gas. Keeping your oil at the proper level and changing it as recommended by your vehicle's manufacturer can help prevent issues like P0522.