DTC U0122: Lost Communication with Vehicle Dynamics Control Module [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN COMMUNICATION SYSTEM

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Select "CAN Bus Check" from the "System Select" screen.

Select "DTC" from the "Can Bus Check" screen, and then select "Enter".

Result

Result	Proceed to
CAN communication system DTCs are not output	A
CAN communication system DTCs are output	B

Turn the power switch off.

B → See step 3

A → See step 2

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]
GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ]