Hi folks please can you help

I have a Qashqai 1.5dci Diesel 2016

I put a redex DPF cleaner into my tank. Reason for this the vehicle was powerless going up hills no engine light on. Thinking it was the DPF I added a Redex DPF cleaner which immediately brought the engine light on. 

Took to garage and had the DPF sensor replaced. Engine light erased. On road test the EM light came back on.

Worried because I should have added the Redex to a full tank not 1/2 Tank. 

ANY HELP WOULD BE GREAT

It may be worth completely filling the tank for a while so that it dilutes the mix

Otherwise it may just need a good run up the motorway for an extended period in a lower gear to keep the revs up for it to regenerate

Hi Trevor it turned out to be the DPF sensor also most importantly the pipe leading to the sensor had split.

Replaced the pipe and sensor and zoom the vehicle back to normal

Thanks for letting us know, always good to know the outcome