Anti-pollution system faulty - Cars & Trucks

If the anti-pollution light on your Peugeot 207 VTi is on, it usually indicates a problem with the vehicle's emission control system. This light may appear in different ways, depending on the model and year of your vehicle, but it usually looks like a picture of an engine with "check" written on it.
Here are some steps you can take to address this issue:

1. Check the gas cap: A loose or damaged gas cap can cause the anti-pollution light to come on. Make sure the gas cap is tightened securely and that it is not damaged.
2. Check the oxygen sensor: The oxygen sensor is responsible for monitoring the level of oxygen in the exhaust and adjusting the fuel-to-air ratio. If the sensor is damaged or malfunctioning, it can cause the anti-pollution light to come on. A qualified technician can diagnose and repair the sensor.
3. Check the catalytic converter: The catalytic converter is responsible for converting harmful pollutants into less harmful gases. If the converter is damaged or malfunctioning, it can cause the anti-pollution light to come on. A qualified technician can diagnose and repair the converter.
4. Check the air filter: A dirty or clogged air filter can cause the engine to run rich, which can lead to increased emissions and the anti-pollution light to come on. Replace the air filter if necessary.

If none of these steps solve the problem, it is best to consult a qualified mechanic to diagnose and repair the issue

Sounds like faulty O2 sensor or bad wiring to it

A sensor dirty or faulty most likely, usually is with C2's, lambda sensor.

oxygen sensor ? in the tail pipe that and the egr valve in intake are the only anti pollution devices I know it could have

check your map sensor in the inlet manifold

run the fault codes to determine where the problem is most likely to be.

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.

Have someone read the codes. check for any damaged vacuum hoses or electrical connectors left unplugged

you need to take it to an a.s.e. certified mechanic and do an evap leakdown test to find out where the leak is in the evap system of your vehicle. replace the gas cap and see if the problem goes away as it is often the problem with this trouble code.

The problem for engine overheating rise due to insufficient refrigerant. Try recharging the refrigerant tank with fresh refrigerant and water. If the refrigerant in the tank is of poor quality then also engine overheat.

The reason for ABS light to come may be due to air in the brake fluid line. Try brake bleeding to remove the air bubbles. Also the faulty brake actuator line may cause the problem. Check for actuators on each wheel.

Pollution warning light comes on if the exhaust system not works properly. Check for faulty Oxygen sensor or faulty catalytic convertor.