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2018 TOYOTA COROLLA
1.8L I4•FWD•CVT•gas•2ZR-FE
3 active safety recalls on this vehicle — view recalls
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Repairs395Labor499Torque3375Fluid7DTC1638Battery1Maintenance0Recalls3
P0551low severityPowertrain

Power Steering Pressure Sensor Circuit Range/Performance

on 2018 Toyota Corolla 1.8L I4 · FWD

What this code means

The power steering pressure sensor signal is outside its expected range. This sensor informs the PCM about steering load so it can adjust idle speed.

Symptoms

  • Idle fluctuation when steering
  • Check engine light on
  • Rough idle at low speed

Common causes

  • Faulty power steering pressure sensor
  • Low or contaminated power steering fluid
  • Wiring or connector fault
  • Restricted power steering hose

Diagnostic steps

  1. Read sensor data with scan tool
  2. Compare signal to steering load
  3. Check fluid level and condition
  4. Inspect wiring and connector
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