DPF Warning Light
The DPF warning light shows that the diesel particulate filter is getting blocked and needs a regeneration drive.
What is DPF Warning Light?
It is amber and often looks like a box with dots inside. Short trips at low speed are the most common cause. Many manuals suggest a steady drive at higher speed to let the filter clean itself. Regular longer drives prevent most DPF warnings on diesel cars.
How it works
The differential pressure sensor measures the pressure drop across the filter and triggers the warning when soot load is high.
Why it matters for your car
Ignoring it can lead to limp mode and an expensive forced regeneration or filter replacement. Follow the manual’s specific instructions for your car.
Other terms
- Bar (Pressure Unit)
- Battery Degradation
- Crossplane Crankshaft
- Dielectric Grease
- Door Ding (Parking Dent)
- Drag Coefficient (Cd)
- EV Battery Warranty
- Head Gasket
- Idle Speed Control
- Inner Tie Rod (Axial Joint)
- Limp Mode (Emergency Mode)
- Load Cover (Parcel Shelf Or Tonneau Cover)
- Misfuelling (Wrong Fuel)
- Over-the-air Update (OTA)
- Range Anxiety
- Reduction Gear (Single-speed Gearbox)
- Serpentine Belt (Auxiliary Belt)
- Smart Charging (Alternator Control)
- Snow Socks (Textile Snow Chains)
- Synthetic Engine Oil