My 2006 Ford Mustang 4.6L read the following O, EV, H, C

Question

I have a 2006 Ford Mustang 4.6L, my battery went dead, and my check engine light came on. the following codes flashed on the scanner.
C
O
EV
H

Answer 1

This is the scanner doing this , you may have to look into the manufactuer for these condition .

Answer 2

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