4th Gen Engine and Drivetrain-2010 and Up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Check engine light at exactly 25000 miles

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Old 07-09-2016, 12:00 PM
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Question Check engine light at exactly 25000 miles

Hello all. My check engine light came on at exactly 25000 miles on the odometer. 2015 stock 2500. Any ideas on why?
Old 07-09-2016, 04:31 PM
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Without a code....it's all a guessing game.
Old 07-09-2016, 04:57 PM
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Like stated above pull the code and we can help you better diag the problem. If it is a P20EE then the fix is simple but we need to know what code has set.
Old 07-09-2016, 08:32 PM
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P203F Reductant Level Low
P20EE SCR Oxides of Nitrogen Catalyst Efficiency Below Threshold (Bank 1)
P249E Closed Loop Reductant Injection Control At Limit Flow Too High
Are the codes I have. Any ideas?
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