P0700
Transmission control system malfunction
The engine ECU has been told by the transmission control module that a transmission-related fault is stored.
What this code means
The engine ECU has been told by the transmission control module that a transmission-related fault is stored.
Possible causes
- Transmission control module has stored one or more faults
- Transmission electrical fault
- Sensor, solenoid or wiring problem
- Internal transmission problem
Common symptoms
- Check engine light
- Transmission warning light
- Limp mode
- Harsh or limited shifting
Checks to make
- Use a scan tool that can read the transmission control module
- Read the specific transmission fault codes
- Inspect transmission wiring and connectors as directed by those codes
- Check fluid condition only where manufacturer procedures allow
Safety
- Support the vehicle correctly before any under-vehicle inspection. Follow manufacturer procedures for transmission fluid checks.
Model notes
P0700 is primarily a request to read the transmission module for more specific codes.