Diagnostic Test

WARNING: This page is about a different car, the 2014 Fiat 500e. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE 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.

Turn the ignition on.
With a scan tool, read the DTCs.
Is the DTC active at this time?

Yes
- Perform the U0002-00-CAN C BUS OFF PERFORMANCE diagnostic procedure in the Body Control Module (BCM). Refer to the DTC INDEX article .
No
- Perform the STORED LOST COMMUNICATION DTCs diagnostic procedure. Refer to DIAGNOSIS AND TESTING .