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!

 

P7066 Error 2014 S-Max 2.0L Automatic

Slacky70mx
Slacky70mx
in Ford S-Max Club

Featured Replies

Hi, I jet washed my car (outside) at the weekend then Monday morning came and it shows a P7066. I’ve cleared the code and it keeps coming back, but more frequently now. 

Intermittently I also get u0415 (ABS control) and a transmission controller error, but not every time. 


I’m assuming it’s to do with water ingress as it seems to coincidental, but I could be wrong.

 

Any thoughts on where to start or things to check? 
 

Thanks

  • Quote


    This site says it's a transmission fault (you list 2 codes for that area) and gives some guidance - does any of that make sense? (Forscan codes are usually more comprehensive and detailed):

    https://carmodnerd.com/p0766/

    Similar here:

    https://www.engine-codes.com/P0766.html

    Anything to do with transmission,IMHO the cheapest way to start is to change fluid and filter plus inspect filter for garbage (specially small plastic bits)?

    Fluid & filter, e.g.:
    https://www.ebay.co.uk/itm/112436788478

    Special process to drain and refill.

    The ABS control is a separate issue and all codes may or not be due to water ingress and that would need further inspection of the modules and connectors and testing.

    PCM is on my model, under passenger side wheelarch liner and had water leak teething problems with similar on C-MAX

    I'm finding I'm becoming boring with my similar comments but I can only say what I would do given the symptoms?

     

  • 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"

    • The Digestive Forum Roundup (24th May - 31st May 2026)

      Steve ·
      The Digestive Forum Roundup (24th May - 31st May 2026) We hope this email finds you well and enjoying your week. As always, our forum has been buzzing with activity, so we’ve compiled the highlights for you. Plenty of interesting discussions are taking place, especially around the Ford Focus and Fiesta models. Starting off with the Focus, many members have been discussing issues with the Emergency Call System, particularly in the Mk4 model. PLB raised concerns about persistent malfunctions, a se
      Steve
      Steve
      • 179 views





    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.