P0730Severity: Medium
P0730 – Incorrect Gear Ratio
The transmission can't achieve the expected gear ratio.
What it means
The ECU sees that the expected input/output speed ratio for the selected gear isn't achieved. Slipping, harsh shifts or an internal mechanical issue can be the cause.
Symptoms
- Gear slipping
- Harsh/late shifts
- RPM rising without speed
- Limp mode
Common causes
- Low/dirty transmission fluid
- Worn clutch/bands
- Solenoid issue
- Internal mechanical fault
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Frequently asked questions
What does trouble code P0730 mean?
P0730 – Incorrect Gear Ratio. The ECU sees that the expected input/output speed ratio for the selected gear isn't achieved. Slipping, harsh shifts or an internal mechanical issue can be the cause.
Can I drive with a P0730 code?
You can usually drive short distances, but it's best to have it checked before it gets worse.