P0552 Fault Code

Power Steering Pressure Sensor Circuit Low Input

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0552 code indicates that there is a low voltage signal being sent from the power steering pressure sensor. This sensor monitors the hydraulic pressure within the power steering system and provides feedback to the vehicle’s engine control unit (ECU). When the signal is insufficient, it can lead to performance issues in steering and may affect overall vehicle handling.

What are the symptoms of the P0552 code?

Vehicle symptoms associated with a P0552 code may include:

• Increased effort required to steer the vehicle, especially at low speeds.
• Steering warning lights illuminated on the dashboard.
• Unusual noises when turning the steering wheel, indicating potential steering pump issues.
• Erratic steering response, making the vehicle difficult to control.

What causes the P0552 code?

The most common causes of the P0552 code include:

• A faulty power steering pressure sensor.
• Damaged wiring or connectors leading to the sensor.
• Low power steering fluid level, causing incorrect sensor signal readings.
• A malfunctioning ECU that isn't interpreting the signal correctly.

How to fix P0552?

To address the P0552 code, the following steps should be taken:

• Start by checking the power steering fluid level and topping it up if necessary.
• Inspect the wiring and connectors for any signs of damage or corrosion, repairing as needed.
• Test the power steering pressure sensor with a multimeter to determine if it is functioning correctly.
• If the sensor is deemed faulty, it should be replaced.
• Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue is resolved.