Diagnostic Test

WARNING: This page is about a different car, the 2020 Dodge Journey. 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, select read DTCs.
Is the DTC Active at this time?

Yes
- Refer to U0121-00-LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE and perform the U0121-Lost Communication with Anti-Lock Brake Module diagnostic procedure.
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.