Code
P0730
Transmission
Incorrect gear ratio
The transmission cannot achieve the expected ratio, indicating internal wear.
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Most likely causes
- Worn clutches or bands
- Low or burnt fluid
- Faulty solenoid
- Slipping transmission
Symptoms you may notice
- Delayed or harsh shifts
- RPM flare
- Limp mode
Checks to run
- Check fluid level and smell
- Read live ratios
- Pressure test
Tools you may need
OBD-II scanner
Transmission pressure gauge
Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.