The car will only drive forward when the transmission is in second gear?

This can mean the first gear shift solenoid needs to be replaced but we should run the codes first, here is a guide to help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Here is how to change the shift solenoid out in case you need it. Check out the images (below). Please let us know what happens.