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Old 12-23-2019, 06:22 PM   #1
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Cummins Code 111

Any idea what this code means. One search says engine ECU critical internal failure. Another says coolant level sensor. Had the coolant tank off to clean and repair a hose or two. Code shows up at restart. Unit hadnít been started in 3 months. It cranks and seems to run fine. Havenít taken it out on the road yet.
Thanks for the help.
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Old 12-25-2019, 07:36 AM   #2
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SPN 111. Coolant level sensor circuit voltage below normal or shorted

Perhaps you loosend the plug or damaged a wire in the process of doing your maintenance.
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