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!

 

Focus 1.6tdci p0299 &p1103

Davey H
Davey H
in General Ford Related Discussions

Featured Replies

Hi, I have a 2010 Focus 1.6tdci with 145k miles on the clock which I have owner for 8 years. When accelerating the engine malfunction comes on the dash or the engine management light comes on. The fault codes are P0299 turbo under boost and P1103 mass airflow sensor in range but higher than expected. 
If I accelerate gently this doesn't happen. The turbo appears to be fine judging by the way the car accelerates in 1st and 2nd gear.
I have read previous posts on this problem but they don't provide a solution for my car.
I have replaced the MAF & MAP sensors, the booster solenoid and EGR valve so far. I cannot find any issues with the pipes. I have an old code reader which shows one constant on the freeze frame info - the MAP pressure always falls to 25kpa (3.6 psi). I have also noticed if I take the oil filler cap off there is back pressure.
Any advice would be greatly appreciated.
Alternatively can anyone recommend a garage in the Liverpool/Southport area that has the relevant equipment and knowledgeable staff to diagnose the problem. 

  • Quote
    • 1 month later...


    Did you resolve this issue? I have the same problem.

  • 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.