Diagnostic Test

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

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.

Ignition on, engine not running.
With the scan tool, select View DTCs.
Is the status Active for this DTC?

Yes
- Refer to U0155-87-LOST COMMUNICATION WITH CLUSTER/CCN - MISSING MESSAGE and perform the U0155-00-Lost Communication with Cluster/CCN diagnostic procedure.
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.