02 sensor 2.2 hdi

[bill196510]

Where is 02 sensor, and how would I know if it is bad,

[oneday]

what makes you think you have a problem with it bill. you can get a readout of it on a lexia

[bill196510]

Got readout on torque android app, timed it,says should be 47 milliseconds, reads 115,
Dont know about this stuff,
Emmisions, 0.39

[Ben82]

Your O2 sensor will be connected to your catalytic converter, so you'll need to get under the car to find it, just follow the exhaust back and you should find it, looks a bit like this.

Check the cable and connector for damage, also check the sensor itself (but make sure you've left it all the cool before removing the sensor). Did you also run the test once the car had fully warmed up?

Have you got a fault code stating that it's responding too slow (e.g. P0133)? The sensor itself will cost you about £90 from citroen, and if you can do the above check yourself then you should be fine doing the replacement yourself... But with it costing £90, I'm sure you want to ensure it is a problem first (i'm not sure what the response times are supposed to be, 115ms doesn't seem too slow to me, but for controlling lean/rich it maybe!)

[bill196510]

Engine was warm, its got particulate filter not cat or do they have both, will look soon, snow again, play time :D:D:D
No fault code, was just messing with new gadget, lol.and noticed it was abit slow

[RichardW]

You'll spend a long time looking for an oxygen sensor on an HDi

[Ben82]

You'll spend a long time looking for an oxygen sensor on an HDi

lol, it's in the Citroen service docs for the 2.2hdi. oh well, cant believe everything you read eh?

EDIT: alright, docbackup just lists the part as sensor, only service lists it as a gas temperature sensor, and looks alot like the O2 sensors. Oh well, sorry about that Bill, be interesting to hear what the actual sensor that Torque is suggesting is an O2 sensor.

[RichardW]

No O2 sensor required on diesels as air is not throttled - it would always read lean! There are temperature and differntial pressure sensors shown, but no Oxygen sensor, as far as I can see.

[bill196510]

Look lol. Im not mad honest im not:P


http://www.ebay.co.uk/itm/360563297554? ... 1423.l2649" onclick="window.open(this.href);return false;

[RichardW]

Most likely the temperature sensor for the DPF!!

[wheeler]

Yeah thats the Cat temp sensor in the ebay ad.
This engine doesent have an oxygen sensor but some modern diesels (including the new C5) do have them.

[bill196510]

Yeah thats the Cat temp sensor in the ebay ad.
This engine doesent have an oxygen sensor but some modern diesels (including the new C5) do have them.

So mine not got one then ?