Partical Filter Low

[chrisrob57]

ive had filter toped up  he said it was empty he toped it up reset computer but still says needs topping up he said sencers probably needs changing 300 pound  can anybody help 

[paul.h]

What car is it ?

 

Was it a Citroen dealer that did the work, if not what diagnostic equipment was used to tell the ecu the fluid (presumably eolys fluid unless it is a more recent car using adblue) had been filled. People have said that on early C5s if there is eolys fluid in the additive tank then it will continue to be dosed if there are low level warning messages being given. Note that a level sensor is not used for the eolys fluid tank, it is just a calculation based on the number of fuel tank fills and when more fluid is put in the ecu needs a diagnostic to give the correct level. Also on early C5s the additive ecu needed replacing when the tank was filled since a diagnostic on its own could not reset the level - but since fluid is still being dosed the low level warning messages can be ignored to save the cost.