Diagnostic Test

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE

Ignition on, engine not running.
With the scan tool, read DTCs and record on vehicle work order.
Is the DTC Active at this time?

Yes

NOTE:
Diagnose the U0002-88 CAN C BUS OFF PERFORMANCE BUS OFF as the U0010-00 CAN C BUS CIRCUIT test.
- Perform the U0010-00-Can C Bus diagnostic procedure. Refer to U0010-00-CAN INTERIOR BUS .
No
- Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to STORED LOST COMMUNICATION DTCS .