Quote:
Originally Posted by f13sta
erm little too late seeing as you have already changed it but errr. did you actually put the car on an emision tester? or did you have it plugged in when the light came on? the second lambda sesnor will flag up a cat ageing when it's working at 95% efficency so it may still have passed emissions and were no need to replace. don't take the diagnostic machine readings as a gosple
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The light hasn't come on.
There is only one sensor, post cat.
The cat was replaced because it was corroded and snapped just before the first join.