How to fix a depollution system fault on peugeot 407?

My mechanic just replace this part, and my car stop having alerting me of Depollution System Faulty. And this part cost me just less than SGD $200 including Labour and if done at AutoFrance Singapore it will cost you SGD$450 and Labour $200 to replace this sensor.
(Please request to use diagnostic to check if the error is cause by the sensor, it may be cause by something else)

After knowing AutoFrance quoted me 3x the price, I immediately go to my own workshop.

Peugeot 407 Singapore owner go to Thomas +65-64834044 at addr 10 Ang Mo Kio Ind Park 2A #03-03 Amk Autopoint.

Attached the photos of the parts for your info https://plus.google.com/photos/106869980578682048223/albums/5685798813310869089

Tan
December 2011

rubish u need 2 change dpf disel practical filter +additif all cost 500£ or removle of dpf and reset the ecu

alm
February 2011

Agreed. I have a 407 and had depollution system fault. The RAC said to give it a `good spanking` down the motorway and that should clear it.

Good News! It did clear it (though MPG wasn't pretty reading!)

Simon
October 2010

give the motor a good long run at high revs in a low gear to get the exhaust really hot and burn off the carbon deposits

wickham
October 2010