AutoCodes – Infiniti – P0550 2003 Infiniti G35

P0550 2003 Infiniti G35 Code - Power Steering Pressure Sensor Circuit Malfunction

Quick Answer

Power steering pressure (PSP) sensor is installed to the power steering high-pressure tube and detects a power steering load. Common causes include Faulty Power Steering Pressure Sensor, Power Steering Pressure Sensor harness is open or shorted, Power Steering Pressure Sensor circuit poor electrical connection. 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 2003 Infiniti G35 indicates Power Steering Pressure Sensor Circuit Malfunction.
Common causes: Common causes include Faulty Power Steering Pressure Sensor, Power Steering Pressure Sensor harness is open or shorted, Power Steering Pressure Sensor circuit poor electrical connection.
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.

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Code Popularity 7,721

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 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 P0550 2003 Infiniti G35 Description

Power steering pressure (PSP) sensor is installed to the power steering high-pressure tube and detects a power steering load. This sensor is a potentiometer which transforms the power steering load into output voltage, and emits the voltage signal to the Engine Control Module (ECM). The ECM controls the electric throttle control actuator and adjusts the throttle valve opening angle to increase the engine speed and adjusts the idle speed for the increased load.

OBDII Code P0550 2003 Infiniti G35 - Power Steering Pressure Sensor Circuit Malfunction - AutoCodes.com — P0550 2003 Infiniti G35 Code - Power Steering Pressure Sensor Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0550 2003 Infiniti G35?

Faulty Power Steering Pressure Sensor
Power Steering Pressure Sensor harness is open or shorted
Power Steering Pressure Sensor circuit poor electrical connection

How to Fix the DTC P0550 2003 Infiniti G35?

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 P0550 2003 Infiniti G35 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 P0550 2003 Infiniti G35 code?

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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.

Frequently Asked Questions about P0550 2003 Infiniti G35 Code

1. What does the OBDII code P0550 mean for a 2003 Infiniti G35?

The P0550 code indicates a malfunction in the Power Steering Pressure Sensor Circuit, which monitors the pressure in the power steering system.

2. What are the symptoms of a P0550 code on a 2003 Infiniti G35?

Common symptoms include a stiff or hard-to-turn steering wheel, fluctuating idle speed, reduced engine performance, or the Check Engine Light being illuminated.

3. What causes the P0550 code to appear on a 2003 Infiniti G35?

Potential causes include a faulty power steering pressure sensor, damaged wiring or connectors in the circuit, or a malfunctioning power steering pump.

4. Can I drive my 2003 Infiniti G35 with a P0550 code?

While the vehicle may still be drivable, ignoring the code can lead to poor steering performance and potential safety issues. Itâ€™s best to address it promptly.

5. How do I diagnose the P0550 code on a 2003 Infiniti G35?

Start by checking the wiring and connectors for damage or corrosion, inspect the power steering pressure sensor, and verify the power steering fluid levels.

6. What tools are needed to diagnose and fix the P0550 code?

Youâ€™ll need an OBDII scanner, a multimeter to test electrical connections, and basic hand tools for sensor replacement or wiring repairs.

7. How do I fix the P0550 code on my 2003 Infiniti G35?

Repairs may involve replacing the power steering pressure sensor, repairing damaged wiring or connectors, or addressing any issues with the power steering pump.

8. What is the power steering pressure sensor's role in a 2003 Infiniti G35?

The sensor monitors the hydraulic pressure in the power steering system and sends this information to the engine control unit (ECU) to adjust engine performance accordingly.

9. How much does it cost to repair the P0550 code on a 2003 Infiniti G35?

The cost typically ranges from $100 to $300, depending on whether you replace the sensor yourself or pay for professional diagnosis and repair.

10. Can low power steering fluid cause the P0550 code?

While low fluid may not directly trigger the code, it can strain the power steering system and potentially lead to sensor or pump issues that cause the code.