Diesel Particulate Filter (DPF) Warning

The diesel particulate filter is becoming clogged with soot. The DPF self-cleans through a process called regeneration — but only at highway speeds for sustained periods. Short-trip city driving prevents regeneration.

1. 1Take the vehicle on a 20–30 minute highway drive at 60+ mph to initiate active regeneration
2. 2Do not ignore — a completely blocked DPF requires expensive forced regeneration ($300–$700+)
3. 3If light stays on after highway driving, the DPF may need professional forced regeneration
4. 4Avoid turning the engine off during regeneration — the exhaust gets very hot

If your scanner returns one of these codes, use MyOBDCode to decode it for full repair cost estimates.