Overdrive off light is on

NADIR HASSAN

MEMBER
2007 DAIHATSU SIRION
1.3L
4 CYL
2WD
AUTOMATIC
262,000 MILES

I think my car final gears is not shifting when the overdrive off and engine sign comes on.
Then I removed battery connection and keep disconnect like to two minutes after that all sign is disappeared and car driving perfectly, but after some time overdrive off and engine sign both are comes again.
Do you have any idea? Where is the problem?

1 Reply

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

Having the overdrive light flashing means a diagnostic fault code is stored in your vehicles computer. Just a basic check engine light code reader will not be able to access transmission codes. You will need to use a scanner or code reader that can support transmission faults. Here is a YouTube video from our site that explains a CAN type scanner that can read all systems on a vehicle and also a CAN tutorial for you to view:

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

https://youtu.be/InIlnsjOVFA

If you disconnect the car battery to turn the diagnostic lights off, If the fault is not fixed the diagnostic lights will keep coming back on until the repair is complete. After you perform this kind of test on your vehicle get back to us with the transmission code information and we can then properly diagnose the issue your car has. Hope this helps and thanks for using 2CarPros.