i have a 1996 nissan maxima and the check engine light is on the code is PO734 . on 1996 Nissan Maxima

I used a code reader and the code was PO734 which was,gear 4 ratio incorrect.What does it mean and what do i need to do to fix it?And how much will it cost?

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1 answer
trans is slipping internally. it indicates you will be needing an overhaul shortly.