A little copy and paste from someone with a PT Cruiser with the same codes:
"The P0700 is an indicator code telling you that there are more codes in the transmission computer. Given the fact that you also have the other 3 codes, I wouldn't be concerned with this code right now.
The remaining 3 codes all indicate internal failures with the PCM/Computer.
I would suggest that all of your fuses be tested first, and if the fuses are all good, then you will need to replace the PCM to get the light to turn off.
Once you have the fuse or PCM replaced, then you can see if your P0700 code returns or not, but if you are not experiencing any transmission shifting concerns, then this is also likely due to the internal fault with the PCM"
Good luck on this.