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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 93 (2.4L Engine - DTCS P1854 To U11OC, Fuel Delivery System Check, Symptom Tests & Verification Tests) >> Diagnosis And Testing >> U0168-Lost Communication With Vehicle Security Control Module (SKREEM/WCM) >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
CAN C BUS FAILURE OPEN OR SHORTED CONDITION
SKREEM (WCW)
PCM

Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diagnostic procedures and for further possible causes. 

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