DTC U0001 Can Communication Malfunction: DTC Detecting Condition

DTC U0001 DETECTING CONDITION TABLE

Item	Detecting Condition	Possible Cause
DTC Strategy	Check CAN message transfer status	Open or short in CAN line Poor connection or damaged harness Faulty ECM
Enable Conditions	Battery voltage > 10V Engine speed > 32rpm Delay time > 0.5 sec.
Threshold Value	20 wrong messages received by ECM
Diagnostic Time	20 wrong messages received by ECM
MIL On Condition	2 Driving Cycles