Diagnostic Test

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE

Turn the ignition on.
With the scan tool, read DTCs and record on vehicle work order.
With the scan tool, erase DTCs.
Cycle the ignition from off to on.
With the scan tool, read the DTCs.
Is this DTC active at this time?

Yes
- Perform the U0001-87-CAN INTERIOR BUS -MISSING MESSAGE diagnostic procedure. Refer to U0001-87-CAN C BUS - NO SIGNAL .
No
- Perform the Stored Lost Communication DTCs diagnostic procedure.Refer to STORED LOST COMMUNICATION DTCS .