Engine-CodesGMC – P0522 2018 GMC Sierra

P0522 2018 GMC Sierra Code - Engine Oil Pressure Sensor Circuit Low Voltage

Quick Answer

The P0522 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that there is a low voltage condition in the engine oil pressure sensor circuit. Common causes include Faulty oil pressure sensor, Wiring issues in the sensor circuit, Low engine oil level. 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 2018 GMC Sierra indicates Engine Oil Pressure Sensor Circuit Low Voltage.
Common causes
Common causes include Faulty oil pressure sensor, Wiring issues in the sensor circuit, Low engine oil level.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0522 2018 GMC Sierra Description

The P0522 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that there is a low voltage condition in the engine oil pressure sensor circuit. This sensor is responsible for monitoring the oil pressure in the engine and sending this information to the vehicle's engine control module (ECM). When the ECM detects that the voltage in the circuit is below the specified range, it triggers the P0522 code.

OBDII Code P0522 2018 GMC Sierra - Engine Oil Pressure Sensor Circuit Low Voltage
P0522 2018 GMC Sierra Code - Engine Oil Pressure Sensor Circuit Low Voltage

Common Causes of P0522 2018 GMC Sierra

  1. Faulty oil pressure sensor
  2. Wiring issues in the sensor circuit
  3. Low engine oil level
  4. Malfunctioning ECM
  5. Clogged oil filter

Symptoms of P0522 2018 GMC Sierra

  1. Illuminated oil pressure warning light on the dashboard
  2. Engine knocking or ticking noises
  3. Loss of power or acceleration
  4. Engine overheating
  5. Poor fuel economy

How to Fix P0522 2018 GMC Sierra

  1. Begin by checking the engine oil level and ensuring it is at the recommended level.
  2. Inspect the wiring and connectors in the oil pressure sensor circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the oil pressure sensor using a multimeter to determine if it is functioning correctly. Replace the sensor if necessary.
  4. Clear the DTC with a scan tool and monitor the oil pressure readings to ensure they are within the specified range.
  5. If the issue persists, further diagnostics may be required to identify any underlying problems with the ECM or other components.

Cost to Fix P0522 2018 GMC Sierra

The typical repair costs for addressing a P0522 engine oil pressure sensor circuit low voltage issue can vary depending on the specific cause of the problem. In general, replacing a faulty oil pressure sensor can cost between $50 and $150, while addressing wiring issues or ECM problems may require additional labor and parts, potentially increasing the total cost to $200-$500 or more. It is advisable to consult with a trusted mechanic or dealership to obtain a more accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates and diagnostic fees can vary based on location and the type of repair facility.

Tech Notes for P0522 2018 GMC Sierra

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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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.

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