Are you losing a significant amount of power as you try to accelerate? I'd check the catalytic converter for blockage - may need to replace it.
The P0700 code is just a generic fault code telling you the TCM has other fault codes stored. You'll need a more specialized scanner (DRBIII) to retrieve those codes - the typical engine scanner cannot get the TCM fault codes.
The P0700 code is just a generic fault code telling you the TCM has other fault codes stored. You'll need a more specialized scanner (DRBIII) to retrieve those codes - the typical engine scanner cannot get the TCM fault codes.