DTC U0001 Can Communication Malfunction: DTC Detecting Condition

WARNING: This page is about a different car, the 2007 Kia Optima, 2007 Kia Magentis, 2006 Kia Optima, and 2006 Kia Magentis. However, it is still accessible from the selected car via links, so may be relevant.

DTC CHART

Item	Detecting Condition	Possible cause
DTC Strategy	Check communication	Open or Short in CAN communication harness Faulty ECM Faulty TCM
Enable Conditions	Input speed ≥ 1000rpm and 5000msec passed from IG "on"
Threshold value	CAN message transfer error
Diagnostic Time	0.5 sec
Fail Safe	INTELLIGENT SHIFT is inhibited Learning for oil pressure control is inhibited Torque Retard requirement is inhibited Direct connection control of TCC is inhibited

REFER TO DTC P0600 .