We have come across a real mixed bag of faults which have all come to us under the banner of a ‘DPF fault’ below are a few recent examples.
A BMW X3 diagnosed by a main dealer as needing the cylinder head decoking and DPF replacement, turned out to be a turbo fault and the DPF was fine. After paying £500 for just a diagnosis, and being given an estimation of £4000 he was pleased to have the car back on the road for less than half the main dealers estimated cost!
A Skoda Fabia kept being force regenerated by main dealer who overlooked low fuel pressure code, now fuel pressure problem resolved by changing the fuel filter, the car regenerates all by itself.
A Toyota Avensis before coming to us had already had a turbo changed and 2 x DPF’s fitted. Turned out to be carbon blocking one of the differential pipes causing a misreading pressure sensor. The misdiagnosis had cost the customer over £3000 before he came to us! Facebook link
A Toyota Avensis that had been diagnosed as needing a new DPF, when we attemted to clean the real problem came to light of a fault EGR valve. With a temporary fix to blank the EGR we successfully cleaned the DPF and replaced the EGR. Facebook Link
The Law has changed!
The government has introduced a change to the MOT as from 16th February 2014. If a diesel particulate filter (DPF) has been removed from a car that had one fitted as standard it will fail the MOT. This is a visual check only for the presence of the DPF and catalytic converter.
Notice issued to MOT stations
On 16th February 2014 Section 7.1 of the inspection manual will be amended to include a check for the presence of catalysts and particulate filters on diesel powered vehicles. Any vehicle where a catalytic converter or particulate filter is missing where one was fitted as standard will fail the test.
If you are planning to export or use the vehicle for ‘off road use only’ in other words do not require to have the vehicle MOT tested then you can still consider having the DPF removed. We would recommend though you carry out your own research on this.