Can this scan tool be used to force a regan on a cummings 6.7 diesel. Current code is P2453.

It really depends on the OBD being a feature of your car. On-board diagnostics (OBD) is a term referring to a vehicle's self-diagnostic and reporting capability so it will depend on the information the car's system sends to our model. We can not specify if it will force a regan/it will work with a car by just the brand or the model. You will need to check that with a mechanic.