Mopar DCU counter reset tool
I'm trying to locate Mopar essential tool p/n … It is required when updating the calibration on a DCU (dosing control unit) that has it's internal flash counter maxed out. Basically, you plug this tool into the NOx sensor #2 connector and it resets the DCU internal counter so you can flash the module. It's detailed on service bulletin 25-003-17 rev A.
Apparently, it was an automatic ship tool to dealers in the second quarter of 2017. I've spoken with Mopar tools and they said the unit is only available as a rental for dealers now and cannot be purchased... really doesn't help the aftermarket.
I've tried google searching it, but haven't been able to find one I can buy. Does anyone have one that there willing to sell or loan out?
Wouldn't it be easier to replace the NOX sensor with a new one?
Glenn, the tool resets the control module, it has nothing to do with the NOX sensor.
Its the not NOx sensor your flashing, its the dosing module (DCU). The tool just plugs into the NOx connector (vehicle side) to communicate with the DCU.
Most dealers have this tool. If i was in Florida I would loan it to you, but I will say that in every case that I have used it and then flashed the DCU, it did not fix the vehicle, even when a TSB specifically addressed a DTC…Your only other alternative is to replace the DCU, …it should come with the latest available software.
Only used it twice…both times had to replace the DCU
Thanks Damon and Richard. It sounds like a real POS procedure. How nice of FCA to publish this and waste their techs' time.
I have flashed and reset counter on about 10 trucks for p207f and been successful with flash about 70 percent of the time . I will say that sometimes for whatever reason the DCU code has to be cleared one more time after a road test . sublet to dealer is an option .