17559/P1151/004433

From Ross-Tech Wiki

17559/P1151/004433 - Long Term Fuel Trim Additive Air; Bank 1; Range 1: System too Lean

Possible Symptoms

  • Malfunction Indicator Lamp (MIL) active

Possible Causes

  • Intake System faulty/leaking
  • Fuel Pressure, Fuel Pressure Regulator and Fuel Pump faulty
  • Fuel Injectors faulty/leaking
  • Exhaust System faulty/leaking
  • Activated-Charcoal Filter/System faulty/leaking
  • Secondary Air Injection System faulty/leaking
  • Lambda/Oxygen Sensor(s) before Catalytic Converter faulty
  • Lambda/Oxygen Sensor(s) after Catalytic Converter faulty

Possible Solutions

  • Check Intake System for Leaks
  • Check Fuel Pressure, Fuel Pressure Regulator and Fuel Pump
  • Check Fuel Injectors
  • Check Exhaust System for Leaks
  • Check Activated-Charcoal Filter/System
  • Check Secondary Air Injection System
  • Check Lambda/Oxygen Sensor(s) before Catalytic Converter
  • Check Lambda/Oxygen Sensor(s) after Catalytic Converter

Special Notes

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