Engine-CodesInfiniti – P0550 Infiniti

P0550 Infiniti Code - Power Steering Pressure Sensor Circuit Malfunction

Quick Answer

The P0550 Infiniti code indicates a malfunction in the power steering pressure sensor circuit. Common causes include Damaged wiring or connectors in the power steering pressure sensor circuit, Faulty power steering pressure sensor, Poor electrical connection between the sensor and the vehicle's computer. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0550 Infiniti indicates Power Steering Pressure Sensor Circuit Malfunction.
Common causes
Common causes include Damaged wiring or connectors in the power steering pressure sensor circuit, Faulty power steering pressure sensor, Poor electrical connection between the sensor and the vehicle's computer.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P0550 Infiniti Description

The P0550 Infiniti code indicates a malfunction in the power steering pressure sensor circuit. In modern vehicles, power steering systems rely on sensors to monitor various parameters and provide feedback to the vehicle's computer system. The power steering pressure sensor is responsible for measuring the pressure of the power steering fluid in the system, allowing the computer to adjust the steering assist as needed.

OBDII Code P0550 Infiniti - Power Steering Pressure Sensor Circuit Malfunction
P0550 Infiniti Code - Power Steering Pressure Sensor Circuit Malfunction

Common Causes of P0550 Infiniti

  1. Damaged wiring or connectors in the power steering pressure sensor circuit
  2. Faulty power steering pressure sensor
  3. Poor electrical connection between the sensor and the vehicle's computer
  4. Issues with the vehicle's computer system
  5. Low power steering fluid levels or a leak in the system

Symptoms of P0550 Infiniti

  1. Heavy or stiff steering, especially at low speeds
  2. Difficulty turning the steering wheel
  3. Power steering warning light illuminated on the dashboard
  4. Whining or groaning noise when turning the steering wheel
  5. Inconsistent power steering assist

How to Fix P0550 Infiniti

  1. Begin by diagnosing the specific cause of the power steering pressure sensor circuit malfunction using a diagnostic scanner.
  2. Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as necessary.
  3. Test the power steering pressure sensor to determine if it is functioning correctly, replacing it if found to be faulty.
  4. Check the electrical connection between the sensor and the vehicle's computer, ensuring a secure and reliable connection.
  5. Clear the diagnostic trouble codes and test the power steering system to verify that the issue has been resolved.

Cost to Fix P0550 Infiniti

The typical repair costs for a power steering pressure sensor circuit malfunction can vary depending on the specific cause of the issue and the vehicle's make and model. In general, parts for this repair could range from $100 to $300, while labor costs may add another $100 to $200. Overall, the total repair cost could fall between $200 and $500. However, it's important to note that these are rough estimates, and actual costs may differ based on factors like location, shop rates, and the extent of the repair needed. It's recommended to consult with a trusted mechanic or auto repair shop for a more accurate cost estimate.

When is the Code Detected?

An excessively low or high voltage from the Power Steering Pressure Sensor is sent to Engine Control Module (ECM).

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Information for Specific Infiniti Models

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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