Tranny is staying in Drive & not going back down in gears up hills or when stopping.

[Customcarmods]

Got a problem with a holden astra needing to turn car off & start again to reset drive from getting stuck in 4th.
Only doesn't change back gears if it reaches 4th. On rare occasion it will. Check engine (car with spanner)
Comes on when it reaches 4th.
Would they be electronic solenoid?

 

[Immortality]

Thread moved to the Astra section!

 

[VH3300]

Got a problem with a holden astra needing to turn car off & start again to reset drive from getting stuck in 4th.
Only doesn't change back gears if it reaches 4th. On rare occasion it will. Check engine (car with spanner)
Comes on when it reaches 4th.
Would they be electronic solenoid?

Did you resolve the problem? I've got same issue, code was for trans speed sensor. You can manually shift 1st to 3rd but no overdrive 4th. Careful with the shift down because it doesn't slip through the gears.