P0730 Incorrect Gear Ratio
The transmission is not achieving the expected gear ratio.
Common causes
- Low or burnt fluid
- Slipping clutches
- Faulty shift solenoid
- Internal wear
Symptoms
- Slipping
- Flare on shifts
- Limp mode
What to check
- Check fluid level and smell
- Read transmission module data
- Have the transmission inspected
Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0730, follow the service information for that make and model.