This code indicates that there is an electrical problem with the shift solenoid D in your Mazda Protege. The shift solenoid D is responsible for controlling the shifting of the transmission from gears 3 to 4. When this code is set, it means that the solenoid is not receiving the correct electrical signal from the transmission control module (TCM). This can be caused by a number of things, including:
* A faulty shift solenoid D
* A damaged wiring harness
* A problem with the TCM
If you are experiencing this code, it is important to have it diagnosed and repaired as soon as possible to avoid further damage to your transmission.
