AutoCodes – Mazda – P0551 Mazda

P0551 Mazda Code - Power Steering Pressure Sensor Circuit Range/Performance

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: P0551 Mazda indicates Power Steering Pressure Sensor Circuit Range/Performance.
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 3,552

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 P0551 Mazda 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 P0551 Mazda - Power Steering Pressure Sensor Circuit Range/Performance - AutoCodes.com — P0551 Mazda Code - Power Steering Pressure Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC P0551 Mazda?

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 P0551 Mazda?

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 P0551 Mazda 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 P0551 Mazda code?

Need more information on how to fix the P0551 Mazda code? Get Access to Factory Service Manuals

Need Help with the 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 P0551 Mazda Code

1. What are common symptoms of OBDII code P0551 in a Mazda related to the power steering pressure sensor circuit?

- Common symptoms include difficulty steering, stiff or jerky steering wheel, illuminated power steering warning light on the dashboard, and potential loss of power steering assistance.

2. What are some possible causes of OBDII code P0551 in a Mazda?

- The code P0551 in a Mazda is often triggered by issues such as a faulty power steering pressure sensor, damaged wiring or connectors in the sensor circuit, low power steering fluid levels, or a malfunctioning power steering pump.

3. How can I diagnose the cause of OBDII code P0551 in my Mazda?

- To diagnose the cause of code P0551, you can use an OBDII scanner to retrieve the specific error code and further investigate the power steering pressure sensor, related wiring, connectors, and power steering fluid levels for any issues.

4. What are some repair tips for resolving OBDII code P0551 in a Mazda?

- Repair tips for resolving code P0551 may include checking and replacing a faulty power steering pressure sensor, repairing damaged wiring or connectors, ensuring proper power steering fluid levels, and inspecting the power steering pump for any malfunctions.

5. Can I continue driving my Mazda with OBDII code P0551?

- It is not recommended to continue driving your Mazda with code P0551, as it can lead to potential safety hazards due to impaired power steering function. It is advisable to address the issue promptly to ensure safe driving conditions.

6. How much does it typically cost to repair OBDII code P0551 in a Mazda?

- The cost of repairing code P0551 in a Mazda can vary depending on the specific cause of the issue, but it may involve expenses for parts such as a new power steering pressure sensor, wiring repairs, or professional labor charges.

7. Can I reset OBDII code P0551 in my Mazda using an OBDII scanner?

- While you can reset the OBDII code P0551 using an OBDII scanner, it is crucial to address the underlying issue causing the fault code to prevent it from reoccurring and potentially causing further damage to the power steering system.