2008 Ford Focus 1.6 diesel zetec 2008
Car runs in limp mode

Avatar
cortinajim
Driver
4 points

Problem added: Mar 23, 2018 (2 years ago)
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

cortinajim

Car details
Car: Ford Focus
Variant: 1.6 diesel zetec 2008
Model Year: 2008
Category: Electrics, ECU, Warnings & Lights
Replies and Fixes
Avatar
1/4drive
Legend
1,890 points

Mar 23, 2018 (2 years ago)
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.
Avatar
paulieone
Legend
1,720 points

Mar 23, 2018 (2 years ago)
if you fitted a new DPF did you reset the counters etc in the ECU ? Not many things are plug and play these days
Avatar
cortinajim
Driver
4 points

Mar 24, 2018 (2 years ago)
Hi
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.
cheers
C
Avatar
cortinajim
Driver
4 points

Mar 24, 2018 (2 years ago)
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.

cheers

C
Avatar
paulieone
Legend
1,720 points

Mar 27, 2018 (2 years ago)
you will need to have it plugged in to Ford diagnostics to reset counters etc
Avatar
Derbyshire
Top Fixer
235 points

Mar 28, 2018 (2 years ago)
Maybe you could try cleaning the ERG valve .
Avatar
cortinajim
Driver
4 points

Mar 29, 2018 (2 years ago)
I am in the process of doing that at the minute. I will keep you al lposted.

cheers

CJ
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