P1574 and Cruise & Set Flashes after 80 Kph

Question

Hi...
when I use Cruise control ((controlling speed & set it))
It works functionally until I reach 80 KPH speed.

After 80k it start flashing (( Cruise & Set )) together and speed control doesn't set again until I turn off engine and take out the key
it's Altima 2006 V6 3.5 codes appear p1574

I wanna know where is the problem located ... I can't find the sensor
Notice : The speed meter works functionally

Answer 1

P1574 ASCD (Automatic speed control device) vehicle speed sensor

The speedometer is working, This would narrow the problem down , as to not being the wheel speed sensor ,and the combination meter. To narrow the problem down when this code check to see if there are any "U" code that may be set with P1574.  or any other code that may be set with this, If this is the only code that is set, and the problem is resolved when the engine key is cycled on to off , this is a control module problem. By cycling the key on to off you are resetting a control module. and that will leave you with the ABS control module