Diagnostics with Phenomenon: Inspection

WARNING: This page is about a different car, the 2020 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.

Symptoms	Faulty parts
Engine stalls when driving in "D" or "R" range, or selecting "N" → "D", "N" →"R".	Control valve Engine control system
While driving in "D" range, vibration occurs immediately before the stop or engine stalls.	Control valve Torque converter
Vehicle cannot shift while driving in "D" range.	Control valve TCM Shift mechanism Power supply system
Excessive shock when selecting "N" → "D", and "N" → "R".	Control valve TCM F & R clutch pack ATF deterioration or lack
Excessive shock at standing start in "D" range.	Control valve TCM F & R clutch pack ATF deterioration or lack
Engine speed increases abruptly during driving in "D" or "R" range.	Control valve Secondary pressure sensor F & R clutch pack ATF deterioration or lack
Vehicle can not start when depressing the accelerator pedal in "D" or "R" range, or acceleration is very poor. (Without abrupt engine increase)	Control valve F & R clutch pack Shift mechanism Parking mechanism Engine control system Power supply system
Shift indicator in combination meter displays the position which differs from select lever position.	Inhibitor switch Select cable related Combination meter
Manual mode enters even though the select lever and paddle shift switch is not operated.	Manual mode switch Paddle shift switch Select lever TCM
Engine speed increases abruptly in "D" or "R" range, vehicle can not start.	F & R clutch pack Select cable related
Manual mode can not be set	Select lever TCM