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Engine-Codes – Generic – P0552

P0552 Code - Power Steering Pressure Sensor Circuit Low Input

Quick Answer

The P0552 diagnostic trouble code (DTC) indicates that the power steering pressure sensor circuit is reporting a low input signal to the engine control module (ECM). Common causes include Faulty power steering pressure sensor that fails to provide accurate readings, Damaged or corroded wiring or connectors in the power steering pressure sensor circuit, Low power steering fluid levels due to leaks or improper maintenance. 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
P0552 indicates Power Steering Pressure Sensor Circuit Low Input.
Common causes
Common causes include Faulty power steering pressure sensor that fails to provide accurate readings, Damaged or corroded wiring or connectors in the power steering pressure sensor circuit, Low power steering fluid levels due to leaks or improper maintenance.
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 Oct 21, 2024
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Code P0552 Description

The P0552 diagnostic trouble code (DTC) indicates that the power steering pressure sensor circuit is reporting a low input signal to the engine control module (ECM). The power steering pressure sensor is a critical component that monitors the pressure within the power steering system. It provides real-time data to the ECM, which adjusts the power steering assist based on the vehicle's speed and steering input. When the sensor detects a low pressure reading, it can trigger the P0552 code.

OBDII Code P0552 - Power Steering Pressure Sensor Circuit Low Input
P0552 Code - Power Steering Pressure Sensor Circuit Low Input

Common Causes of P0552

  1. Faulty power steering pressure sensor that fails to provide accurate readings.
  2. Damaged or corroded wiring or connectors in the power steering pressure sensor circuit.
  3. Low power steering fluid levels due to leaks or improper maintenance.
  4. Malfunctioning power steering pump that does not generate adequate pressure.
  5. ECM issues or software glitches that misinterpret sensor signals.

Symptoms of P0552

  1. Difficulty steering the vehicle, especially at low speeds.
  2. Warning lights illuminated on the dashboard, such as the power steering or check engine light.
  3. Unusual noises from the power steering pump, such as whining or grinding.
  4. Fluctuating power steering assist, where the steering feels heavy at times and lighter at others.
  5. Fluid leaks around the power steering system, indicating potential issues with the pump or hoses.

How to Fix P0552

  1. Visual Inspection: Begin with a thorough visual inspection of the power steering pressure sensor, wiring, and connectors for signs of damage, corrosion, or loose connections.
  2. Check Fluid Levels: Verify the power steering fluid level and condition. If low, top it off and check for leaks in the system.
  3. Sensor Testing: Use a multimeter to test the power steering pressure sensor for proper voltage output. Replace the sensor if it is found to be faulty.
  4. Wiring Repair: If damaged wiring or connectors are identified, repair or replace them to ensure a solid electrical connection.
  5. ECM Reprogramming: If all components are functioning correctly but the code persists, consider reprogramming or updating the ECM to resolve any software-related issues.

Cost to Fix P0552

The typical repair costs for addressing a P0552 code can vary widely based on the specific vehicle make and model, as well as the underlying cause of the issue. On average, the cost for parts and labor may range from $150 to $600. For example, a new power steering pressure sensor may cost between $50 to $150, while labor can range from $80 to $150 per hour, depending on the shop's location and expertise. In metropolitan areas or at dealerships, rates can be higher, while independent shops may offer more competitive pricing. It's advisable to consult local repair shops for a more precise estimate tailored to your vehicle's needs.

When is the Code Detected?

A low voltage from the Power Steering Pressure Sensor is sent to Engine Control Module (ECM).

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Code P0552 Information for Specific Makes

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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