What does code P0730 mean on a Infiniti and is it safe to drive?
P0730: Incorrect Gear Ratio. Here’s what it means on your Infiniti, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
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What this code means
The transmission control module has detected that the actual gear ratio does not match the commanded gear, indicating a slipping or internal transmission issue.
Common causes for your Infiniti
- Low or burnt transmission fluid
- Internal clutch or band wear
- Faulty shift solenoids
Symptoms
- Check Engine Light or transmission warning light
- Harsh shifts, slipping, or delayed engagement
- Limp mode in some vehicles
Typical fixes
- Check and service transmission fluid
- Replace faulty solenoids or valve body
- Overhaul or replace transmission if internal damage is severe
Repair cost range
For a Infiniti, repairs for P0730 often fall between $200 and $4000, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.