P1138

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Revision as of 11:58, 30 August 2012 by Jef (talk | contribs) (Created page with "__FORCETOC__ == 17546/P1138 - Fuel Trim: Bank 2 (Add): System too Lean == ==== Possible Solutions ==== * Check Mass Air Flow (MAF) Sensor * Check Fuel Pressure Regulator * C...")
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17546/P1138 - Fuel Trim: Bank 2 (Add): System too Lean

Possible Solutions

  • Check Mass Air Flow (MAF) Sensor
  • Check Fuel Pressure Regulator
  • Check Fuel Pump
  • Check Intake/Exhaust System for Leaks
  • Check Secondary Air Injection for Leaks
  • Check Vacuum Lines for Leaks

Special Notes

  • Fuel Trim Info
  • When this fault is stored and external vacuum leaks are not found, less obvious problems may be present:
    • Check Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80)
    • Check Brake Booster and Hoses
    • Check Electric Vacuum Pump ( If Applicable )
    • Check Crankcase Ventilation System for faulty components. When the PCV or Crankcase Ventilation System is faulty, vacuum is typically present under the oil cap and misfire faults are common.