DTC codes / Subaru codes / P1701
P1701 on Subaru vehicles means the transmission control module (TCM) has detected an abnormal signal on the cruise control set circuit, which is wired through the automatic transmission (AT) control system. The TCM expects a specific voltage pattern when the cruise control set button is pressed, and it flags this code when the signal is missing, stuck, or out of range.
Guidance is general and written for Subaru vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
Get the app
Quick access from your home screen.