OD light on then go off when start engine

[Skyfiro A32]

Hi all sifu,

Recently realize my cefy wen I turn ignition to ON,the OD light will on then goes off..
after that I start the engine,the OD light on back in few seconds then it turn off again..

I'm wondering is any problem on it?I rmb last time the OD light will not on when start the engine..

Thanks for all sifu sifu help

 

[Ultimate Cefiro]

A/T ecu maybe??

 

[sb3]

A/T ecu maybe??

Or check your OD switch at your gear lever and TPS. Just a long shot, did you check your atf lately?