Skip to content
View in the app

A better way to browse. Learn more.
Ford Owners Club - Ford Forums

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.



Join the Independent Ford Owners' Club

Our community has been built by enthusiasts, for enthusiasts, and proudly run by Ford owners' for over 18 years. As an independent, non-official club, everything you’ll find here, advice, support, and opinions, comes directly from members with genuine Ford ownership experience.

Join our friendly community... it's Free!

 

Engine Management Light Code P0420

btmaldon
btmaldon
in Ford KA / StreetKA Club

Featured Replies

Hi folks

The Engine Management light came on on the wifes SportKA. I put my code reader on it and it came back with a P0420.

According to my book that means: Catalyst efficiency below threshold (Bank 1).

Can anyone tell me if this is likely to be the catalytic converter or just the Lambda sensor?

If it is the Lambda, is there only the one that sits on top of the manifold on this car?

Thanks for any info.

  • Quote


    • Author

    Thanks Stoney. I cleared the code then took the little beast for a blast and the light hasn't come back on. Im hoping its just a blip, but at 85k miles and 9 years old things start to go wrong.

    I spent a grand on it last December and really dont want to be wasting more money on it although it is great fun to drive.

  • Quote

    • Latest Deals

    Ford UK Shop for genuine Ford parts & accessories

    Disclaimer: 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.

    Guest
    Reply to this topic...
    Go to topic listing

    The "Digestive"






    Background Picker
    Customize Layout

    Account

    Navigation

    Search

    Search

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.