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1997 FORD THUNDERBIRD
5.0L V8•FWD•AUTOMATIC•gas
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor493Torque493Fluid7DTC1624Battery1Maintenance0Recalls2
P0553low severityPowertrain

Power Steering Pressure Sensor Circuit High Input

on 1997 Ford Thunderbird 5.0L V8 · FWD

What this code means

The PCM detected a high voltage signal from the power steering pressure sensor. This sensor lets the engine adjust idle when steering effort increases.

Symptoms

  • Idle changes when steering
  • Check engine light on
  • Erratic idle speed

Common causes

  • Open in sensor wiring
  • Faulty power steering pressure sensor
  • Corroded or loose connector
  • Failed PCM input circuit

Diagnostic steps

  1. Read sensor voltage with scan tool
  2. Inspect wiring for opens
  3. Check connector integrity
  4. Test sensor with known good reference
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