DTC P0891 At Relay - Open Circuit: DTC Detecting Condition

DTC CHART

Item	Detecting Condition	Possible cause
DTC Strategy	Check voltage range	Open or short in circuit Faulty A/T control relay Faulty PCM/TCM
Enable Conditions	16V > Voltage Battery >11V Time after TCM turns on > 0.5sec
Threshold value	Feedback Voltage ≥ 20V
Diagnostic Time	2 seconds
Fail Safe	Locked in 3rd gear. (control relay off)