Tag Archives: DTC P0554 Hummer

DTC P0554 Power Steering Pressure Sensor Circuit Intermittent

In the intricate world of modern vehicles, the power steering system plays a pivotal role in making your driving experience smooth and effortless. This system relies on a variety of sensors to ensure it functions correctly, one of which is the Power Steering Pressure Sensor. When this sensor reports intermittent issues, it triggers Diagnostic Trouble Code (DTC) P0554. In this comprehensive guide, we will delve into what DTC P0554 signifies, explore its potential causes, outline the symptoms you may encounter, and provide a step-by-step guide for diagnosing and rectifying this issue effectively.

1. What Does P0554 Code Mean?

DTC P0554 specifically points to intermittent problems within the Power Steering Pressure Sensor Circuit. This sensor is responsible for relaying data to your vehicle’s computer, which then adjusts power steering assistance based on the pressure within the power steering system.

2. What Are the Causes of DTC P0554?

Several factors can lead to the occurrence of DTC P0554:

  • Faulty Power Steering Pressure Sensor: The sensor itself may be intermittently malfunctioning, causing it to provide irregular readings.
  • Wiring Issues: Problems with the wiring, such as loose connections or damaged wires, can disrupt the sensor’s signal intermittently.
  • Connector Problems: Poor connections or damaged connectors related to the power steering pressure sensor can lead to intermittent issues with the sensor’s performance.
  • Intermittent High Power Steering Fluid Pressure: Fluctuations in power steering fluid pressure can intermittently affect the sensor’s readings, leading to the code.

3. What Are the Symptoms of DTC P0554?

Recognizing the symptoms associated with DTC P0554 is essential for proper diagnosis. Common signs include:

  • Intermittent Steering Feel: You may experience occasional variations in steering feel, making the steering wheel sometimes more sensitive and at other times less responsive.
  • Intermittent Power Steering Warning Light: The power steering warning light on your dashboard may illuminate and then go off intermittently, indicating sporadic issues with the system.
  • Varying Power Steering Assistance: The level of power steering assistance may fluctuate, causing the steering wheel to feel inconsistently responsive.

4. How to Diagnose DTC P0554?

To accurately diagnose DTC P0554 and its intermittent nature, follow these steps:

5. How to Fix DTC P0554 Problem?

Once you have identified and diagnosed the intermittent issue causing the Power Steering Pressure Sensor Circuit Intermittent (DTC P0554), it’s essential to address it effectively. Here’s what to do:

  • Replace the power steering pressure sensor if it is found to be intermittently faulty during testing.
  • Repair or replace any damaged wiring, connectors, or loose connections associated with the sensor.
  • Ensure that the actual power steering fluid pressure remains within the recommended range during both normal and intermittent operation.
  • After making the necessary repairs, clear the trouble code using your OBD-II scanner to reset the power steering warning light.


DTC P0554 points to intermittent problems within the Power Steering Pressure Sensor Circuit, potentially affecting the performance of your power steering system. Understanding the meaning of this code, recognizing the intermittent symptoms, identifying potential causes, conducting systematic diagnosis, and applying effective solutions are crucial for restoring the power steering system’s functionality and ensuring safe and smooth vehicle operation.