P0700 is a generic code for: Transmission Control System Malfunction
There's a few different possible causes for your computer recording this code.
The wires/connectors leading to and from the Trans/PCM could be corroded, broken or loose.
One of the electronic control devices inside of the computer could've failed.
The computer itself may have failed. (Unlikely)
I couldn't possibly diagnose your problem, but I hope I helped point you in the right direction.
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Tuesday, January 19th, 2010 AT 8:49 AM