If it is full then you should cycle your vehicle.

Turn the ignition to Run then off then to Run. This should clear your DTC that you are getting.

Is the rear window washer actually working? If not then there are further issues that you may have.

 

Yes, both washers work. The question may have answered itself, but what I wanted to know is if there are two reservoirs (front/rear) or just one. The one in the engine compartment.
Thanks

 

Cool. Glad that it is working. If you have any further questions dont hesitate to ask.