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P1416 – Secondary Air Injection System Low Flow (Bank 2)

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Symptoms

  • Rough idle
  • Emissions failure
  • Cold start issues

Causes

  • Blocked passages
  • Faulty pump
  • Leaking hoses

Diagnosis

  • Command air pump
  • Inspect hoses
  • Check valves

Repair

  • Replace pump
  • Repair hoses
  • Clean passages
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