P0725Engine Speed Input Circuit
What it means
The transmission control module doesn't receive a usable engine speed signal.
Symptoms
- Harsh, late or missing shifts
- Transmission in limp mode (stuck in one gear)
- Gearbox or check engine warning light
Common causes
- CAN communication fault
- Crank sensor problem
- Wiring fault
What to check first
- Check engine speed in the transmission module live data
- Check for CAN or crank sensor codes
- Check wiring
Generic OBD-II meaning. Manufacturer-specific meanings and checks can differ; always check the service information for the car.