What causes Diesel Particulate Filter Warning Light comes on ?
What causes Diesel Particulate Filter Warning Light comes on ?
The Diesel Particulate Filter Warning Light comes on for a few reasons ¹ ² ³ ⁴ ⁵:
Soot buildup: The DPF light comes on when the soot level in the diesel exhaust is too high, which can cause the vehicle to enter limp mode.
Blockages: The DPF can become blocked over time, causing a warning light to be displayed on the dashboard.
Regeneration failure: The DPF light can come on if the regeneration process fails.
Passive regeneration failure: Passive regeneration occurs when the vehicle is driven at higher speeds, and if this process fails, the DPF light will come on.
Active regeneration failure: Active regeneration is automatically triggered by the car’s electronic control unit (ECU) when the car has been in motion long enough to reach a certain temperature, and if this process fails, the DPF light will come on.
Faulty DPF pressure sensor: A faulty DPF pressure sensor can also cause the DPF light to come on.
if your DPF light comes on call Aine at Auto Repairs Navan on 046 9073333.
Professional regeneration of DPF for cars and light commercial vehicles
A Diesel Particulate Filter (DPF) is designed to reduce the soot emissions from your vehicles exhaust by up to 80%. DPFs were introduced following the ‘Euro 5’ standards coming into force and are required to be in good order for your NCT OR CRVT
A DPF works by trapping bits of soot in the exhaust. The DPF is structured like a series of honeycomb filters that stop the soot passing all the way through the filter therefore reducing emissions.
DPF blockages are common in this fairly new technology, especially when your vehicle is used to travel frequent short distances. A DPF effectively self cleans in a process called ‘regeneration’ where the soot is burnt off the filter at high temperature usually when the vehicle is travelling consistently at moderate to high rpm. However, if the DPF builds up too much soot it will drastically reduce the performance of the vehicle and could require a manual clean.
Our DPF cleaning service, using state of the art technology, provides a fast and cost effective solution. This regeneration process achieves 95% of the original new condition
Using our DPF cleaning service can generate significant savings, removing the need to undertake costly on-going repair bills or buy expensive new filters.
