P0700: Transmission Control System Malfunction / MIL Request
System: Transmission control · Priority: medium
What P0700 means
The control module detected a condition matching the generic definition Transmission Control System Malfunction / MIL Request. A trouble code identifies what the module detected; it does not automatically identify the failed part.
Useful next checks
- Scan the transmission control module for its specific codes.
- P0700 is usually a request to illuminate the MIL, not the root fault.
- Use a scanner that can access transmission modules and live data.
Why vehicle context matters
The same generic code can have different diagnostic paths depending on engine, calibration, wiring layout, service bulletins and related codes. Freeze-frame and live data can help establish when the fault occurred.
Need a scanner for P0700?
Build a direct VeroRoad page for your year, make and model. It will open the vehicle-specific read-codes / diagnostic context instead of a generic product list.