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On my 2000 Chevrolet Express 5.0L O, C, and EV are flashing on scanner

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On my 2000 Chevrolet Express 5.0L O, C, and EV are flashing on scanner

Vehicle: 2000 Chevrolet Express 5.0L

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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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