Ford Focus 1.6 - Engine Management Light won't turn off - kaaliz

A few months ago I put a brand new (not reclaimed) catalytic converter into my Focus and ever since then my Engine Management Light has been on. When my mechanic hooks it up to the reader it says there is a problem with the CC, but he's checked and there isn't - it's working perfectly and my emissions are fine.

My mechanic can cancel the light but it just comes on again a few days later with the same error. My mechanic says the car just doesn't like the new CC.

I've got used to ignoring the EML but I worry if some other fault develops I won't know about it because this light is on all the time.

Any advice?

Ford Focus 1.6 - Engine Management Light won't turn off - elekie&a/c doctor

Unfortunately there are cats that work efficiently enough to keep the engine light out and there are cats that don't.I guess you have the latter.As you have found ,the emissions will be fine.As the mil light is on permanently the only suggestion would be to buy a cheap code reader to check the system yourself,or take it to your mechanic every few months.