2008 Ford Focus - Car runs in limp mode

Focus 1.6 diesel zetec 2008 Problem
The Problem
Joined: 1 year ago | Fixes: 3 | Profile

I am an old retired mechanic. My grandson's car had a new DPF fitted approx. 35,000 miles ago by previous owner. In recent times the code for blocked DPF has become a problem. Ford's say new filter required. I fitted new DPF and a reconditioned turbo and all seemed well. After 86 miles the new DPF is now said to be blocked, or at least that's what the computer says. I do not believe there is anything wrong with the engine or exhaust system, i believe the problem is with the computer. Anybody any ideas on how i can get my G'sons car back to running properly


Car Ford Focus
Variant 1.6 diesel zetec 2008
Year 2008
  All Ford Focus Problems
Category Electrics, ECU, Warnings & Lights
Recalls Ford Focus Recalls
Joined: 8 years ago | Fixes: 1,862 | Profile
DPF blockage in that mileage is possible if the vehicle is only use on short trips,
So ideal world would be to plug it in to Ford diagnostics and check.
Actual DPF % can be read off,
And a forced regen might be possible though I'm unsure if that make/model has that capacity.
Or use a can of "Wurth" DPF regen,
shouldn't be a problem for an old school mechanic to use the stuff.
'course there's other treatments out there but I haven't used them,
The Wurth stuff I have used.
And theres DPF cleaners that cook the soot out
DPF has too come off for this but again your up to that.
Joined: 10 years ago | Fixes: 1,666 | Profile
if you fitted a new DPF did you reset the counters etc in the ECU ? Not many things are plug and play these days
Joined: 1 year ago | Fixes: 3 | Profile
Because it was a reconditioned turbo, the car was driven at 2000 revs approx. for the 86 miles to allow the turbo to bed in. We went up the motorway so I don't think there was an opportunity to get the DPF sooted-up. I "think" the problem is access to a reset button or code,but I could be wrong.
Joined: 1 year ago | Fixes: 3 | Profile
Focus running in Limp mode

After installing new DPF and being "old School" I have no idea how to reset the CPU, but very happy to accept advice.


Joined: 10 years ago | Fixes: 1,666 | Profile
you will need to have it plugged in to Ford diagnostics to reset counters etc
Joined: 4 years ago | Fixes: 223 | Profile
Maybe you could try cleaning the ERG valve .
Joined: 1 year ago | Fixes: 3 | Profile
I am in the process of doing that at the minute. I will keep you al lposted.


Post a reply
Please login to reply
Can't find a solution to your own Focus problem?
Planning on fixing the problem yourself?

If you need parts to do the job head over to Euro Car Parts to find the parts you need.

  • Free UK Delivery
  • 365 Day Returns
  • Free Click and Collect
More 2008 Focus problems in this category
AutoInsider News
Common reasons car heaters stop working

If your heating has packed up read our guide to the common reasons why.

The UK region with the most Dacias is...

Find out which part of the UK were buying the most Dacia cars in 2018.

The Latest Problems
Vauxhall Insignia
Not starting
Peugeot 3008
Radio no sound
Vauxhall Combo
Not starting
Find your nearest
On Social Media