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P1418 – Secondary Air Injection Pump Relay Fault

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Symptoms

  • Cold start issues
  • Emissions failure

Causes

  • Faulty relay
  • Damaged wiring
  • Connector corrosion

Diagnosis

  • Test relay
  • Inspect wiring
  • Check connector

Repair

  • Replace relay
  • Repair wiring
  • Clean connector
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