DTC P1886 3-2 SS Valve Assembly CKT Electrical
It's the solenoid that controls the downshift from 3rd to 2nd gear.
The solenoid may just have a short or high resistance.
20-32 ohms is what the reading should be.
This is the solenoid facing the FRONT of the car as you are looking up at the valvebody once the pan is dropped.
It is the DRIVERS SIDE solenoid.