2.7 CRD

2003 Jeep Grand Cherokee • 5 cylinder 4WD Automatic • 126,000 miles

Hi, Have fault code P1608 along with others.I know what the code means but not where device8 is or what it does is the loss of serial communication a cabling issue?
other codes are 0100,0115,0190,0235,2120,2125
any help greatly appreciated
November 20, 2010.

The loss of a serial communication usually an internal computer issue.