keefola Posted January 22, 2017 Share Posted January 22, 2017 Code Read: p0420 Catalyst System Efficiency Below Threshold Bank 1 Would people think this is an o2 sensor that needs replacing? Fiesta 2003 Zetec 1.4 thanks Quote Link to comment Share on other sites More sharing options...
dezwez Posted January 22, 2017 Share Posted January 22, 2017 that or cat on its way out Quote Link to comment Share on other sites More sharing options...
keefola Posted January 22, 2017 Author Share Posted January 22, 2017 Just now, dezwez said: that or cat on its way out try the o2 sensor first? Quote Link to comment Share on other sites More sharing options...
dezwez Posted January 22, 2017 Share Posted January 22, 2017 how many does it have 1 before and 1 after the cat Quote Link to comment Share on other sites More sharing options...
keefola Posted January 22, 2017 Author Share Posted January 22, 2017 Just now, dezwez said: how many does it have 1 before and 1 after the cat I'm not too sure dezwez, not too good with cars. Probably best to take it to mechanic..? Quote Link to comment Share on other sites More sharing options...
dezwez Posted January 22, 2017 Share Posted January 22, 2017 Quote 1 minute ago, keefola said: I'm not too sure dezwez, not too good with cars. Probably best to take it to mechanic..? how many miles are on it Quote Link to comment Share on other sites More sharing options...
dezwez Posted January 22, 2017 Share Posted January 22, 2017 I had same thing on my mates mk1 focus turn out to be the catalytic converter that was a high mileage car we got a aftermarket one and it was fine after that Quote Link to comment Share on other sites More sharing options...
keefola Posted January 22, 2017 Author Share Posted January 22, 2017 10 minutes ago, dezwez said: 97,000 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Ford UK Shop
Sponsored Ad
Name: eBay
Ford Model: FordUK Shop
Ford Year: 2024
Latest Deals
Ford UK Shop for genuine Ford parts & accessoriesDisclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via the club
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.