18609/P2177/008567

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18609/P2177/008567 - Bank 1; System Too Lean off Idle

18609/P2177/008567 - Bank 1; System Too Lean off Idle: Upper Limit Exceeded

Possible Symptoms

  • Malfunction Indicator Ligh (MIL) active

Possible Causes

  • Fuel Pump (G6) faulty
  • Mass Air Flow (MAF) Sensor (G70) faulty
  • Intake System leaking
  • Exhaust System leaking
  • Wrong Fuel Pressure Sensor (G247) on Fuel Rail
  • MAF sensor air flow disruption

Possible Solutions

  • Check Mass Air Flow (MAF) Sensor (G70)
  • Check Fuel Pump (G6)
  • Check Fuel Injectors
  • Check Intake System
  • Check Exhaust System
  • Confirm correct Fuel Pressure Sensor (G247) part number
  • Check Air Filter, air box, etc.. Air flow is disrupting MAF readings
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