Code result
P07D9
Gear 8 Incorrect Ratio
High severity
What it means
While in 8th gear, the measured input/output ratio does not match the calibrated value — slipping clutch, wrong gear actually engaged, or speed sensor data wrong.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Slipping clutch in 8th gear element
highOne of the most commonly reported causes for this code — check this first.
Related help
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