Code Definition

P0552 — Power Steering Pressure Sensor Circuit Low Input

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P0552

P0552 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P0552 is stored, the module has detected a signal or supply voltage lower than the expected operating range; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P0552 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P0552 fault code is set when the Engine Control Module (ECM) detects a lower than expected input signal from the power steering pressure sensor circuit. This sensor measures the hydraulic pressure in the power steering system and provides information to the ECM. The ECM uses this data to adjust the power steering assist to ensure smooth and responsive steering. A low input signal in this sensor's circuit can suggest an electrical issue, such as a short to ground, a malfunctioning sensor, or problems with the wiring or connectors. This condition can lead to a decrease in power steering assi...

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