my problem has not solution

[basharalezze]

my problem is input speed sensor turbine dont send signal to the computer and the result is the fourth speed not found .... can any help me

[CTScott]

Have you replaced the turbine sensor? If you did and you are still seeing the same error code, then the transmission is slipping.

[basharalezze]

Have you replaced the turbine sensor? If you did and you are still seeing the same error code, then the transmission is slipping.

thank you . but do you think the reason is computer of car

[CTScott]

The computer could be the issue, but the sensor or the internals of the transmission are far more likely to be the problem.