Peugeot 307 XT 2002 catalyst anomaly

A message that indicates an anomaly in catalyst appeared on the multifunction screen ... anyone knows what the problem and possible solutions could be

Generally that notice indicates problems of the heater Lamda, either the first or the posterior

Hello, I am new in this, I tell you what until now is. If you appear polluting anomaly and the engine is well it is a failure of electrical origin and if you appear inoperative catalyst the solution is the replacement of it not by a catalyst if not for a replacement that in any house of escape pipe Its cost is $ 500 approx. I hope my data is served my peugeot is 307 xt 2.0 gasol

Hello I have problems with the catalyst of my Pontiac Grand Prix 2002 car has the light of the Service already changed the catalyst twice and the two censors and follow the light I can do help me please

It would be good to know the fault codes. They can be aged and/or inoperative oxygen sensors, they can be the heater of these sensors or the catalyst itself. Some cars do require original equipment. Send the codes and see what results. Greetings from Chiapas.