P0553 Power Steering Pressure Sensor Circuit High Input

OBD2 Code: P0553

Description: Power Steering Pressure Sensor Circuit High Input

Definition: This code indicates that the power steering pressure sensor circuit has a high input, which means the voltage or signal from the sensor is higher than expected by the vehicle’s engine control module (ECM). This can be caused by issues such as a faulty sensor, wiring problems, or an ECM malfunction.

P0553 – Power Steering Pressure Sensor Circuit High Input

Typical Severity: Moderate

Common Causes

P0553 – Power Steering Pressure Sensor Circuit High Input

Description: The power steering pressure sensor circuit is registering a high input signal.

Common Causes:

• Faulty power steering pressure sensor
• Short or open circuit in the power steering pressure sensor wiring
• Corrosion or poor connection at the power steering pressure sensor connector
• Low power steering fluid level
• Faulty power steering pump

 

Common Misdiagnosis

OBD2 Code: P0553

Description: Power Steering Pressure Sensor Circuit High Input

Common Misdiagnosis: Replacing the power steering pump or pressure sensor without checking for wiring issues or connector problems.

 

Common Diagnostic Steps

OBD2 Code: P0553

Description: Power Steering Pressure Sensor Circuit High Input

• Check the power steering fluid level and condition. Ensure it is at the correct level and not contaminated.
• Inspect the power steering pressure sensor for any visible damage or corrosion on the connector and wiring.
• Test the voltage at the power steering pressure sensor using a multimeter to ensure it falls within manufacturer specifications.
• Examine the wiring harness for any signs of wear, fraying, or disconnection that could cause high resistance or open circuits.
• Verify that there are no leaks in the power steering system that might affect sensor readings.
• If equipped, use an OBD2 scanner to clear the code and test drive to see if it returns, indicating an intermittent issue.
• If all else fails, consider replacing the power steering pressure sensor with a new unit as a last resort after confirming all other components are functioning correctly.