Hi
I have a Peugeot 207 2009 1.6 Diesel that's done about 128,000 miles.
It just passed its MoT today with normal results for emissions.
After about 20 miles (30-70 mph) it lost power and the message "anti
pollution fault" flashed on the display. I was forced to stop, waited a
bit, then restarted.
The ECU warning light is on but performance seems normal. I drove
another 10 miles without issue (except the warning light is still on).

I've Googled the problem and the fault can be caused by a variety of
issues, but I'd like to know if the MoT was just a coincidence or is
there something done in this test that could've caused damage? Ramming a
sensor up the exhaust for example.

Thanks for any comments.