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P1584 – Throttle Control Internal Fault

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Symptoms

  • Reduced power
  • Hesitation
  • Limp mode

Causes

  • Actuator failure
  • ECU issue
  • Sensor mismatch

Diagnosis

  • Scan ECU
  • Test throttle actuator
  • Inspect wiring

Repair

  • Replace actuator
  • Update ECU
  • Repair wiring
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