Have a 09 g37 auto 7 speed 120k miles and recently got a check engine soon as in which checked it out and found out got a code ‘4 gear ratio’ really haven’t down forces as in down shifted badly would any one know how to fix this any solutions or should I leave as is and dive on regular yet plate gonna expire in oct and gonna have to take it to test it out need help ASAP! Also tmps goes off any other solutions?! it could reply faster to me on ig : tnjosu3