Oakley3912 Posted September 20, 2010 Share Posted September 20, 2010 I am currently trying to find out what it means to have an inactive code of 9-2 CODE J-1939. The truck is a 2003 Mack CH613. Please advise the meaning of this code.Thanks Quote Link to comment Share on other sites More sharing options...
rhasler Posted September 20, 2010 Share Posted September 20, 2010 I am currently trying to find out what it means to have an inactive code of 9-2 CODE J-1939. The truck is a 2003 Mack CH613. Please advise the meaning of this code.ThanksIt means the truck electrical system lost power while the ignition was still on. Happens a lot with loose battery connections or bad batteries and also if a master battery switch is turned off before the VMAC system powers down. Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment Share on other sites More sharing options...
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