Diagnostic Test

WARNING: This page is about a different car, the 2014 RAM 3500 HD and 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC

Turn the ignition on.
With the scan tool, read ABS DTCs and record on the repair order.
With the scan tool, erase DTCs.
Cycle the ignition from off to on.
With the scan tool, read DTCs.
Is the DTC active?

Yes

NOTE:
Diagnose the U0002-88 CAN C BUS OFF PERFORMANCE as the U0010-87-CAN INTERIOR BUS - MISSING MESSAGE test.
- Perform the U0010-00 CAN INTERIOR BUS diagnostic procedure. Refer to the DTC INDEX article .
No
- Perform the STORED LOST COMMUNICATION DTCs diagnostic procedure. Refer to DIAGNOSIS AND TESTING .