I have an 04 G35 coupe A/T that the AT check light come on after the battery died. So far, have changed the MAF, Throttle body, Valve body, TCM, speed sensors on the rear axle, Battery, 02 sensors and did a fluid and filter change. AT check light is still on. Nissan can not figure out the issue. Has anyone else had this issue and if so have an idea of a fix? Also the only code coming up through Nissans software is Airbags which it has aftermarket seats that is setting the light off. No SES light or any other codes being thrown. Any help would be great

 

Im pretty sure a good code scanner should pick up a transmission code. That is strange.

 

Does the car drive fine?

 

it starts and runs fine but the AT check light is on and it acts like its stuck in 3/4th. At about 25mph it takes off like nothing is wrong but doesnt shift into any other gear

 

talked to a guy last night and he stated sometimes the programming can mess up for the tcm or modules on the trans but he wants to look at it next week. Nissan can not figure out the issue and Inifinit is 2hrs away and wants $600 just to look at it

 

What code is it throwing, most auto parts houses have full range OBD2 scanners that can read the code.

Nissan definitely read the code, does it show what code was thrown on your paperwork?