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P0550 Nissan Code - Power Steering Pressure Sensor Circuit Malfunction

Quick Answer

The P0550 diagnostic trouble code for Nissan vehicles indicates a malfunction in the power steering pressure sensor circuit. Common causes include Faulty power steering pressure sensor, Damaged wiring or connectors in the sensor circuit, Electrical issues such as shorts or open circuits. 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 Nissan indicates Power Steering Pressure Sensor Circuit Malfunction.
Common causes
Common causes include Faulty power steering pressure sensor, Damaged wiring or connectors in the sensor circuit, Electrical issues such as shorts or open circuits.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P0550 Nissan Description

The P0550 diagnostic trouble code for Nissan vehicles indicates a malfunction in the power steering pressure sensor circuit. This sensor is responsible for monitoring the pressure in the power steering system, which assists in making steering easier for the driver. When this sensor malfunctions, it can lead to a variety of issues with the power steering system, affecting the vehicle's handling and overall performance.

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

Common Causes of P0550 Nissan

  1. Faulty power steering pressure sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Electrical issues such as shorts or open circuits
  4. Low power steering fluid level
  5. Contamination in the power steering system

Symptoms of P0550 Nissan

  1. Stiff or difficult steering
  2. Erratic or inconsistent power steering assistance
  3. Power steering fluid leaks
  4. Illumination of the power steering warning light on the dashboard

How to Fix P0550 Nissan

  1. Diagnose the issue by using a scan tool to retrieve the trouble code and inspecting the power steering pressure sensor and circuit for any visible damage.
  2. Replace the power steering pressure sensor if it is found to be faulty or damaged.
  3. Repair or replace any damaged wiring or connectors in the sensor circuit.
  4. Check and refill the power steering fluid level as needed.
  5. Clear the trouble code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0550 Nissan

The typical repair costs for addressing a P0550 code in a Nissan vehicle can range from $150 to $400, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to inquire about local rates to obtain a more accurate estimate for this repair.

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 Nissan 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.

Frequently Asked Questions about P0550 Nissan Code

No Frequently Asked Questions about P0550 Nissan Code found.

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  • my 2005 Nissan quest  have three trouble code P0113-P0183-P0550- I already replace whole Fuel Pump for P0183 (built in fuel temp sensor), And replace Mass airflow sensor for P0113. But it,s still showing three code as it is. Three code are related with harness and connecters problem. So Problem is some where else. Because of It,s not possible all Three sensors have lose connections or bad connecters. what is a ECM problem ? , Any body Help me plz.

    Reply to Comment

  • ECM = Engine Control Module.

    The ECM could be the problem, but it's very unlikely. You should follow the wires from the items you replaced and check the connector and grounds.

    Download the "Engine Control" section of the service manual from here: http://x.nissanhelp.com/for...

    The download it's free you just need to register.

    Reply to Comment

  • My experience say, (may i am wrong) , My Van need to replace ECM , because every sensor is not gonna show same kind of problem, voltage high input .What i can use  used same ECM ?. If i buy used same model/years ECM, what i need reprogram it ?. any shorter way ?.

    Reply to Comment

  • What model and year is your Nissan? some models and year don't need to the key reprogram to the new ECM.

    Reply to Comment

  •  my 2005 Nissan quest  have three trouble code P0113-P0183- I
    already replace whole Fuel Pump for P0183 (built in fuel temp sensor),
    And replace Mass airflow sensor for P0113. But it,s still showing two
    code as it is. Three code are related with harness and connecters
    problem. So Problem is some where else. Because of It,s not possible all
    Two sensors have lose connections or bad connecters. what is a ECM
    problem ? , Any body Help me plz. Read more: https://www.autocodes.com/p05...

    Reply to Comment