AutoCodes – Nissan – P0550 2011 Nissan Altima Sedan

P0550 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan 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 7,435

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 Apr 14, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0550 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan - Power Steering Pressure Sensor Circuit Malfunction - AutoCodes.com — P0550 2011 Nissan Altima Sedan Code - Power Steering Pressure Sensor Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0550 2011 Nissan Altima Sedan?

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 2011 Nissan Altima Sedan?

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 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan 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 2011 Nissan Altima Sedan Code

1. What does the OBDII code P0550 mean on a 2011 Nissan Altima Sedan?

P0550 indicates a Power Steering Pressure Sensor Circuit Malfunction, which means the vehicle's ECM has detected an issue with the power steering pressure sensor or its circuit.

2. What are common symptoms of P0550 in a 2011 Nissan Altima?

Symptoms may include difficult or erratic steering, a stiff steering wheel, the Check Engine Light being illuminated, and sometimes reduced power steering performance.

3. What causes the P0550 code to appear in a 2011 Nissan Altima?

Common causes include a faulty power steering pressure sensor, damaged or corroded wiring or connectors in the sensor circuit, or a failure in the ECM.

4. Can I drive my 2011 Nissan Altima with a P0550 code?

While the car may still be drivable, it could have reduced steering performance, making it unsafe in certain conditions. Itâ€™s best to address the issue promptly.

5. How do I diagnose the P0550 code in a 2011 Nissan Altima?

Start by checking the wiring and connectors for damage or corrosion around the power steering pressure sensor. Use a multimeter to test the sensorâ€™s output and verify the circuitâ€™s continuity.

6. How do I fix the P0550 code on my 2011 Nissan Altima?

Repairs may include replacing the power steering pressure sensor, repairing or replacing damaged wiring or connectors, or, in rare cases, reprogramming or replacing the ECM.

7. How much does it cost to repair a P0550 code on a 2011 Nissan Altima?

Replacing a power steering pressure sensor typically costs $150â€“$300, including parts and labor. Wiring repairs may vary depending on the extent of the damage.

8. Can a bad power steering pump cause the P0550 code?

While itâ€™s not a common cause, a failing power steering pump could increase pressure irregularities, potentially triggering the P0550 code.

9. Will resetting the Check Engine Light fix the P0550 code?

Resetting the light may temporarily clear the code, but the underlying issue needs to be addressed to prevent the code and symptoms from returning.

10. Does the P0550 code affect fuel efficiency in a 2011 Nissan Altima?

In some cases, a malfunction in the power steering pressure sensor circuit can slightly reduce fuel efficiency due to increased engine load when steering.