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Unusual code . Check the 3 connectors on the back of the dash cluster for pins pushed out .  Has the cluster been replaced? This code is commonly seen inactive after doing software update on the cluster. Cluster possibly out of another truck/wrong part number. Unhook any Qualcomm or data loggers that are on any of the data lines. 

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https://www.bigmacktrucks.com/topic/70379-2016-mack-mp8-code/#findComment-508261
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  • 3 weeks later...

Mackpro appreciate it. Checked all of those and tried resetting the code to no avail. Think it was a bad/weak ground causing the issue. The grounding cables on the battery had corrosion between the inside of the lug and cable. New cable and code went away. Dont know if it was the ground or just leaving all the computers without power overnight.   

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https://www.bigmacktrucks.com/topic/70379-2016-mack-mp8-code/#findComment-509918
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