307 SW Antipollution fault & U1218 fault.

[Pokotti]

Hey!
I thought I'd ask here for help with a problem with my car. The car is a 2007 registered Peugeot 307 SW. The engine is a 2.0 liter gasoline engine.
The car suddenly started to indicate an "AntiPollution" fault on the screen and the engine fault light came on. On the testers, the only fault code that appeared is code U1218. Is there a slightly more detailed explanation here, where would it be worth looking for the fault? When the code is reset, it takes approx. 2-3 engine starts until the same happens again. Otherwise, everything seems to be fine, except sometimes it sounded like the engine was "wobbly" after starting for a few seconds.
VIN is: VF3**************[VIN obfuscated, can be read by forum staff]

Any ideas?

[GiveMeABreak]

That's fault is a communication fault and not helpful, as it can relate to the under inflation system (which you don't have) or simply communication with the BSI - which is also not helpful.

So unless there are any other fault codes you have I can't offer any other help I'm afraid, but these antipollution faults can be related to emissions / sensors in connection with the emission system for example.