Code result
P0730
Incorrect Gear Ratio
High severity
What it means
The ratio between input and output speed does not match any expected gear. Indicates slippage, valve body fault or sensor inaccuracy without identifying a specific gear.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Internal slippage
highOne of the most commonly reported causes for this code — check this first.
Valve body fault
mediumA plausible cause — test and verify before replacing parts.
Speed sensor reading inaccurate
lowLess common, but worth ruling out after the more likely causes.
Related help
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