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Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P3400 To U1403 >> U0168-Lost Communication With Vehicle Security Control Module (SKREEM-WCM) >> Possible Causes
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Possible Causes

Possible Causes 
CAN C BUS OPEN OR SHORTED CONDITION
NO POWER TO WIRELESS IGNITION NODE (WIN) - NODE UNPLUGGED OR OPEN FUSE
POWERTRAIN CONTROL MODULE (PCM)

Refer to DIAGNOSIS AND TESTING for diagnostic procedures and for further possible causes.

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