P2459 — Diesel Particulate Filter Regeneration Frequency
Seen on: 2007+ diesel engines with DPF
Diesel Particulate Filter Regeneration Frequency. Common causes: Short trips preventing regen, high idle operation.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Caution. Limp to the next safe stop.
Most likely causes
- Short trips preventing regen
- high idle operation
- Oil consumption into exhaust
- faulty NOx sensor
FAQ
Diesel Particulate Filter Regeneration Frequency. Common causes: Short trips preventing regen, high idle operation.
Caution — Limp to the next safe stop.
The most common cause is: Short trips preventing regen. Other possibilities include high idle operation; Oil consumption into exhaust; faulty NOx sensor.
Limp to the next safe stop. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Find a mechanic or related guides
General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.