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Home >> Ford >> 2020 >> Fusion Titanium Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 74 (Engine Controls - Powertrain DTC Descriptions (Except Diesel & Hybrid) - DTC P023A - P060D) >> DTC P04EF - EVAP System Very Small Leak Detected - Fresh Air Side

DTC P04EF - EVAP System Very Small Leak Detected - Fresh Air Side

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DTC DESCRIPTION P04EF - EVAP SYSTEM VERY SMALL LEAK DETECTED AND FRESH AIR SIDE

Description:  This DTC sets when a fuel vapor leak from an opening as small as 0.508 mm (0.020 inch) is detected between the evaporative emission (EVAP) leak detection control module and the fuel tank isolation valve.
Possible Causes: 
  • Very small holes or cuts in the fuel vapor hoses or tubes between the EVAP leak detection control module and the fuel tank isolation valve
  • Damaged EVAP purge valve
  • Damaged EVAP leak detection control module
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST HX .