If it is impossible to communicate through internal or external CAN line over 500ms, ECM/PCM sets DTC U0001.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
CAN communication status check | 1. Poor connection 2. Open/Short |
Enable Conditions |
•
Battery voltage 9 V~16 V
•
Time after engine start greater than 1 sec. | |
Threshold Value |
•
CAN BUS error | |
Diagnostic Time |
•
Continuous | |
MIL On Condition |
•
2 driving cycles |
