Powertrain Control Module (PCM)

U0001-CAN C BUS

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Continuously when the ignition is on.

Battery voltage between 10.0 and 16.0 volts.

- Set Condition:
The controller detects an open, short to ground, or a short to voltage on the CAN C Bus circuit. If the vehicle is equipped with the stop/start feature, the system will be disabled when this DTC is active.





Diagnostic Test
VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

1. Turn the ignition on.
2. With the scan tool, read active DTCs.

Is this DTC active?

Yes

- U0002 and perform the U0002-CAN C Bus Off Performance diagnostic procedure.

No

- Manufacturer Code Charts and perform the Stored Lost Communication DTCs diagnostic procedure.