"Grumps" <gru...@not.here> wrote in message
news:pdkeei$mm9$1...@dont-email.me...
I have a Pug 308 1.6 HDi, so the same engine. I've had it give Anti
Pollution Fault a couple of times. One time it was because a "pouch" of
"additive" (possibly something akin to AdBlue used by buses and HGVs) had
ruptured and so the engine wasn't receiving the additive. That was a couple
of hundred quid to be fixed. The other time was the diesel particulate
filter that had stopped working properly. I did all the normal things, like
running for a while in a lower gear than normal to get the engine revving
fast, in the hope that this would trigger the burning-off of soot which
happens routinely. But this was to no avail, so I had to have a new DPF and
a new cat - the latter because when they removed the DPF, the nut on the new
DPF stripped the thread on the cat as it was being tightened (in fairness,
the cat was of an age where it should have been replaced anyway). That
little lot cost a grand :-(
The same thing happened to be last week: Anti Pollution Fault message and
severe loss of power - it was a struggle to get the car above 40 and that
dropped to about 20 on a long gradual hill. I booked the car into the local
Pug garage, and then something made me look under the bonnet. And I found...
the outlet hose from the turbo to the inlet manifold had come off! It was
about two minutes' work (one of which was finding a screwdriver) to loosen
the jubilee clip, refit the hose and tighten the clip securely. I knew
within about a hundred yards of driving that normal service had been
resumed. I wonder whether the garage may not have properly re-tightened the
hose when they were doing work on the car (a fuel-starvation problem which
needed new glowplugs and a new fuel-pressure sensor) a couple of months
earlier...
The moral of this last tale is that even after you rectify the fault that is
causing the error, it takes several cycles of start-run-stop before the
warning and engine management light go out spontaneously. So you *might*
find that the fault goes away of its own accord - maybe something they did
during the test triggered the fault and it's taking its time to clear. Or
you may need to get it looked at. I'd suggest using a non-Pug garage first
of all, because they usually charge less for using their diagnostic tool
that plugs into the engine management unit, whereas the Pug garage wanted to
charge me £120 even to diagnose, before they even started to fix. I wonder
whether they would have done that if I'd taken the car in with the hose
detached - it would have been an interesting "gotcha" test for a TV
programme or motoring magazine article to rig a car like this and sort out
the honest from the unscrupulous ;-)