Medium and Heavy Trucks
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If there is a code than the regen process will not complete. You need to have the ECM scanned and and the fault corrected. The reason you cannot do a regen is because the engine is protecting it's self from further damage. Please don't forget to Accept.Rte my service.
It is the shops Hourly charge plus parts. It is impossible to tell what the fault is for and the parts needed without verification .
They will provide you with a repair quote prior to repairing the unit. If you accept he quote the repair process will begin.