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P1524 – Variable Valve Timing Oil Control Fault

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Symptoms

  • Hesitation
  • Poor acceleration
  • Rough idle

Causes

  • Low oil pressure
  • Clogged VVT solenoid
  • Oil contamination

Diagnosis

  • Check oil pressure
  • Test VVT solenoid
  • Inspect oil condition

Repair

  • Replace solenoid
  • Change oil
  • Repair wiring
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