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Home >> Ford >> 2011 >> Focus S, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Powertrain DTC Charts & Descriptions - DTC P0001 Through DTC P0217 - (Except Diesel & Hybrid) >> DTC P0093: Fuel System Leak Detected - Large Leak

DTC P0093: Fuel System Leak Detected - Large Leak

P0093 - FUEL SYSTEM LEAK DETECTED - LARGE LEAK

Description:  This DTC sets when the powertrain control module (PCM) detects an air leak that exceeds a calibrated limit for greater than 5 seconds. If the airflow entering the engine exceeds the airflow through the throttle, a leak is detected and this diagnostic fails.
Possible Causes: 
  • Unmetered air leaks between throttle body and intake valves
  • Air leaks at the intake manifold
  • Positive crankcase ventilation (PCV) system is leaking or the PCV valve is stuck open
Diagnostic Aids: 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST HG .