LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Dodge and Ram >> 2019 >> ProMaster 2500 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> 3.6L - DTCS P2174 To U1412 >> DTC Troubleshooting >> U0168-Lost Communication With Vehicle Security Control Module >> Possible Causes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Possible Causes

Possible Causes
UNLEARNED KEY BEING USED
KEY LEARN PROCEDURE WAS ABORTED/CANCELED
CAN C BUS OPEN OR SHORTED CONDITION
BODY CONTROL MODULE (BCM)
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .