Have you had problems with the Diesel Particulate Filter (DPF)
on your Freelander 2? Are you even wondering why you need a DPF?
The tightening of vehicle emissions levels under Euro 5 legislation has meant that many modern diesel vehicles require a Diesel Particulate Filter to be fitted to collect carbon soot particles generated from the combustion process in a diesel engine.
These particles are microscopic balls of carbon containing pure carbon at their core, which are deposits of different hydrocarbon compounds, metal oxides and sulphur – some of which are potentially hazardous to health, hence the focus on them for reducing emissions.
DPFs, however, are prone to malfunctioning as a result of becoming blocked or full, particularly when the vehicle makes an excessive number of short journeys.
This will result in a fault code appearing, the common ones being:
P1471 – Diesel Particulate Filter (Bank 1) Regeneration not completed
P2002 – Diesel Particulate Filter (Bank 1) Efficiency below threshold
P2003 – Diesel Particulate Filter (Bank 1) Particulate mass too high
P242F – Diesel Particulate Filter (Bank 1) Regeneration not active
P244A – Particulate Filter DIfferential pressure too low
P244B – Particulate Filter Differential pressure too high
P2452 – Particulate Filter Differential pressure sensor malfunction
P2453 – Diesel Particulate Filter Differential pressure sensor malfunction
P2454 – Diesel Particulate Filter Differential pressure sensor voltage too low
P2455 – Diesel Particulate Filter Differential pressure sensor malfunction
P2458 – Particulate Filter regeneration maximum regeneration time exceeded
P2459 – Particulate Filter regeneration, regeneration frequency implausible
When the P1471 – DPF regeneration not completed’ code appears you need to be trying a regeneration of the filter to see if that solves the problem.
To regenerate the filter the engine needs to be up to temperature. At this point the Freelander will start to raise the DPF temperature and as long as you maintain a steady speed, such as on motorway driving, it will complete its regeneration. Unfortunately it is not a quick process, you will need 10-15 minutes of motorway driving when hot to take the DPF from full to empty.