EML | O2 sensor | P0141

[Grizzly Bear]

Yesterday my engine management light came on, luckily I have an OBD2 plug in device which flagged up the fault code P0141 (Bank 1, Sensor 2). Can anyone tell me if this is the pre or post cat o2 sensor? Also would this be any good to replace:

http://www.ebay.co.uk/itm/DIRECT-FIT-RENAULT-MEGANE-1-4-1-6-1-8-2-0-16V-LAMBDA-O2-SENSOR-FRONT-REAR-LS13-/181133913553?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3ARenault%7CModel%3AMegane&hash=item2a2c6c2dd1

It's the 4 wire one but there seems to be a 3 & 5 wire one as well. Your help is much appreciated so thanks in advance.

Rich

[Grizzly Bear]

Anybody?

[AlexB]

I think it is post-cat. This fault may also indicate a cat failure.

[Grizzly Bear]

I'll try the O2 sensor first since it's much cheaper! Do you know if the one in the link is any good or has anyone got the part number? It's an 06 1.6 vvt Dynamique Cabriolet.

[Grizzly Bear]

Does anybody know the part number for the post-cat O2 sensor or can you help by confirming if the one in the link is any good?