Prius not refueling properly

all.

Got a problem with my Prius not refueling correctly.

It is a fleet vehicle so is used by many different drivers.

Sometimes when refueling at the fuel station the pump will be prevented from filling the tank fully perhaps by as much as 2 litres or 3 litres.

However, it will from time to time appear to allow the tank to be refilled fully so there does not seem to be any consistency.

Tried different pumps to check if maybe an issue with that but this was not the problem.

Don't know if this is connected but also found one or two times that when the tank was supposedly refuelled fully the fuel level indicator on the dash was showing 1 bar less than a full tank only to magically change to show full tank a few minutes later so do not know if there is a delay with the sensor level indicator in the tank.

Looking through the forums it could be a plethora of issues causing this but maybe someone has had the same problem and managed to rectify this.

Any help would be appreciated.

 

126,000 miles.

 

Got a feeling it might be to do with the filler neck as it is wobbly. You can actually move it around a little so this might be restricting the fuel flow. The problem is there are so many things that might be causing it so will just have to do trial and error starting with cheapest option first.

I did see on this forum in another thread mention letting the tank go near empty because if the tank has been overfilled many times before it can cause confusion with the sensors or something resulting in thinking that the tank is full when it is not.
Apparently, letting the tank go near empty and then refueling rectifies this so will give this a try first.

 

Do you know its purpose in relation to emissions?

 

What is that? Do you know if UK models have them?

 

Okay. There might be another issue with the car that may be connected to that. I recently had the catalytic converter replaced along with the O2 sensor after the engine management light came on.
However, 1,000 miles later and the management light came on again with the description of "Catylist system" indicating the catalytic converter again. The mechanic said it can't be that as we have changed everything and put it down to the hybrid ECU stll carrying the fault code from before and cancelled it. However, 1 week later to present it has come on again.
Just beginning to wonder if that emissions canister is the problem if there is one on the vehicle as this could be linked to the catylist system etc.

 

If it does put some gas vapours into the CAT then that would strongly indicate the problem with the engine management light and it is possible that could have been the original problem and the catalytic converter might not have been faulty and may not have been required to be replaced.

 

There is no way I will use an official dealer from any company.