DTC P0780 Shift Error: DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSE

Item	Detecting Condition	Possible cause
DTC Strategy	Check the shift signal	S1,S2 solenoid-valve TCU Line pressure solenoid-valve (SLT) Shift solenoid-valve (SLC1, SLC2, SLC3, SLB1)
Enable Conditions	ATF temp. > 65°C TCU communication = normal Shift lever switch = "D" range Output speed > 300rpm
Threshold value	Detect abnormal shifting
Diagnostic Time	More than 20 times x more than 1sec
Fail Safe	Self learning control is inhibited. Adaptive control is inhibited