P0700 Transmission Control System (MIL Request)
The transmission control module has stored its own fault and asks the engine computer to light the check engine light.
Common causes
- Any transmission fault stored in the TCM
Symptoms
- Check engine light
- Harsh or delayed shifts
- Limp mode in one gear
What to check
- Read codes from the transmission module itself
- Check transmission fluid level and condition
Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0700, follow the service information for that make and model.