Thread: CCM Code H72
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Old 05-22-2011   #3
Marc Haibeck
 
Join Date: May 2007
Location: Addison IL
Posts: 253
Default Re: CCM Code H72

Hi Dominic,

A data scanner can cause the CCM 72 error because the scanner can hog the serial data buss.

The problem can occur if the ECM calibration model year does not the match the CCM MY.

If the fuel use data is displayed on the cluster the serial data line between the ECM and the CCM is working.
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