Citroen vts 55 plate 2ltr 180bhp coupe

You need an auto electrician to connect a pro grade scan tool computer and it will diagnose codes and communication errors that a cheap tool can't.

Peugeot depollution system error

https://www.google.com/search?q=depollution+sytem+faulty

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I have 1987 toyota 4runner model and I keep servicing and when needed repair it on my own. worth it !!!

If it's a C4, read this: Where is the fuel filter on citroen c4

I am guessing but it could be the particulate filter is sufficiently blocked to cause exhaust back pressure to become excessive.

If this is the case the car will need the solvent reservoir topping up and diagnostic equipment using to initiate a cleaning cycle.

Is there any fault indication on the dash where the radio display is.
Anti pollution is basically citroens way of saying emissions system so it could be as simple as a loose emissions pipe but from what you say and the car does not run it could be your catalytic converter (part of the exhaust system) has failed causing the engine management system to cut in and protect the engine.
If there is no fault apart from anti pollution showing in the radio display find someone with a diagnostic machine to give you a better idea of the fault. Hope this helps a bit.

The sensors on new cars come on for no reason most of the time. It is a common problem with any new car. Take your car to your local friendly Auto Zone or the equivalent thereof. Have them run the codes and reset it. This will turn the light off. If it returns, take it to the dealer and have the sensor replaced

car need full service

These motors and some other models with the same system always give problems .Havent done one myself as yet but other mechanics have that i talk too and if this is a diesel which has this system then you remove the particle filter on the exhaust system and make a rear box to fit type job and the sensor you disconnect and solder a resistor of around the 10.000 ohm mark across the sesnor wires to make the computer think all is well .Depends on the year though as to weither this will work satisfactory as a 53 plate sounds misteriously like some sort of secret code to me .Just noticed it says petrol 16v Hmm have to think again here as no idea with this one only ever see a diesel variant but if the cap fits so to speak have a look to see if has got a filtering out exhaust system if not then sell it quick and buy a ford or a VW

try to recheck the spark plug distribution cable arrangement otherwise check your spark plug may be one of it is short or the gap is not proper.

Will be related to engine management in some way, it will need to be checked out by a specialist, might need the particulate filter regenerating££££