Was it a genuine OE cat or a pattern part?I have a rover 45, 52 plate. The engine management light keeps coming on, I have had diagnostic tests done & was told it was one of the cat convertors, I have had them both changed, it did not come back on then while I was doing short journeys, after driving about 40 miles continuouslly it came back on, I took it back for another test & was told it could be one of the lando sensors, I have had 1 changed & again while doing short journeys it was ok, I did another journey of 40 miles over the weekend & the light has come on again, it is on permenatly, I am losing patience & money having all these things replaced, I was wondering if anyone has any ideas. Thanks
If it was not a genuine OE cat then that is your problem. Common fault.