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Hey everyone,
Has anyone ever had code P249D pop up? I fixed a coolant leak yesterday and let the car idle in the driveway for about 45 minutes to make sure that the leak was gone. On the way to work I got the exhaust fluid quality poor, 99 miles until 65mph message. I figured the sensors were coated in soot from idling so long, so I’ve been driving it hard trying to burn it off with no luck. I hooked up my scanner tonight and that is the only code in the system. Any thoughts on what direction I should take?
 
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