It is showing a code: OF followed by oF

What do you mean by “car won’t read the right problems that’s wrong with the car” Do you mean it doesn’t show a code or the code you got Has been repaired and it still codes or running problems.

What the specific codes are is important can you post that ?

What is your mobile and model ?
If you forgot the security code you have to reset you mobile. Its the only way to use your mobile again. After resetting you can enter a new security code again.
If you use nokia or alcatel mobile means just visit here Simpleunlocking.com for the master reset code service and get the reset code........

There is No BL 4 model Phone in Nokia That is Nokia Battery type so please specify the Model Correctly..if you forgot the security code or Don't know the code means try default code 0000 or 12345 or 1234 if not works means You can get the Nokia Master Reset code from here
Onlinegsmunlock.com
and reset from security lock,Nokia DCT master reset code available there.

What is the Phone brand and model?
You can reset the Phone Using the master reset code,if the Phone is Nokia or Alcatel Phone means You can reset the Phone easily....you can get the master reset code from here
Unlocking4free.com and reset it.....i reset my Nokia 6600 from the security Lock.
You can try Default code for Nokia 1234 or 0000 If it not works means You can get the Free master reset code there and reset it...For other Brand You can get the master reset code from service provider.....

What is Mobile Phone Model and Brand?Because if you don't know the code means you can reset it using the master reset code,You can get the master reset code from here Unlock-free.com and reset it,then use some default code....You can specify the Mobile Brand and Model that is Important..There You can get MASTER RESET code for Nokia DCT Phones and Alcatel OLD Phones Only...

Try calling the service provider get the master reset code and reset it.

If you forgot the Password or Don't know means you can better master reset the Phone what is Mobile Brand and model? You can get the master reset code from here Theunlockarena.com and reset it...If your phone is Alcatel and Nokia means get the master reset code there.....

What is your mobile and model ?
If you forget the security code means get the master reset code for that one, get the master reset code from this site http://www.prounlocking.com/unlocking-services/rs8wp6/ , it has the best services for the master reset codes for your mobile phones..........

download the user manual and read how to fix it