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P0551 Powertrain

Power Steering Pressure Sensor Range/Performance

The PS pressure sensor signal stays in electrical range but is implausible for the operating state, e.g. high pressure reported with the wheels straight.

Affected components

  • Power steering pressure sensor

Common causes

  • High likelihood: Sensor drift or contamination
  • Low likelihood: Sensor element aged beyond calibration window
  • Low likelihood: Sensor mounting loose - signal damping

Diagnostic notes

  • The malfunction indicator lamp may illuminate

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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