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Code flashing c ev 0 oh e on a 1999 Ford F150 V8, also a question mark is lit up yellow

Vehicle: 1999 Ford F150 V8

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OBDII scanners communicate with the Engine Control Module (ECM) to verify all the systems are ready to test. The system initial or name will flash to indicate that the system is not ready, and the smog test will fail or not be complete.

  • M = Misfire
  • F = Fuel System
  • CC = Comprehensive Component
  • HC = Heated Catalyst
  • C = Catalyst
  • EV = Evaporative System
  • 2A = Secondary Air System
  • O = Oxygen Sensor Heater
  • E = Exhaust Gas Recirculation

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