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DEF system service required

flan said:
I have read step 1 is clean the tank, refill with FRESH DEF. step 2 clean crystallization off the injector. Then go from there. Seems to have had decent results in the past.
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Unfortunately, when the code popped up for the injector I just went ahead and replaced that and kept going. Nothing else I read about that issue pointed to draining and cleaning the tank.
 
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