MasterTuning Fault code dictionary (DTC)

P2459 — Diesel Particulate Filtra Regeneration Frequency

Severity: Serious Can you drive? With caution: limp mode possible, have it checked soon Produttore: Tutti makes (OBD-II standard)
MeaningThe Motore computer has noticed that the Diesel particulate Filtra is regenerating much more often than Normale. This usually means the soot is building up too Veloce, oppure the filter is struggling a Completato its self-cleaning cycles.
FamilyPowertrain (P)

Typical symptoms

Frequent activation di the cooling fans after shutdown
A burning smell near the rear di the Veicolo
Slightly higher fuel consumption during short trips

Common causes

Frequent short trips that do not allow the Motore a reach operating temperature
A faulty exhaust gas temperature sensor giving wrong readings
Ash accumulation inside the Diesel particulate Filtra over Alta mileage
Issues with fuel injectors oppure the EGR valve creating excess soot

What a do

Drive the Macchina for a sustained period on a highway alle a steady speed a give the Filtra a chance to Completato a full cleaning cycle. If the Attenzione persists, have a technician check the soot load and sensor readings soon to avoid clogging the filter.

Domande Frequenti

What does code P2459 mean?

Diesel Particulate Filter Regeneration Frequency. The engine computer has noticed that the diesel particulate filter is regenerating much more often than normal. This usually means the soot is building up too fast, or the filter is struggling to Completato its self-cleaning cycles.

Can I keep driving with code P2459 Attivo?

With caution: limp mode possible, have it checked soon

Common causes — P2459

Frequent short trips that do not allow the Motore a reach operating temperature A faulty exhaust gas temperature sensor giving wrong readings Ash accumulation inside the Diesel particulate Filtra over Alta mileage Issues with fuel injectors oppure the EGR valve creating excess soot

How do you fix code P2459?

Drive the Macchina for a sustained period on a highway alle a steady speed a give the Filtra a chance to Completato a full cleaning cycle. If the Attenzione persists, have a technician check the soot load and sensor readings soon to avoid clogging the filter.

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