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P2458 — DPF Regeneration Duration
CautionAftertreatmentLimp to the next safe stop
Seen on: Heavy Truck/Diesel
DPF Regeneration Duration. Common causes: Regen taking too long to complete.
Don't risk it — get a diesel tech on the truck.
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
- Regen taking too long to complete
- Faulty temp sensors
- fuel quality issue
First moves (roadside)
- Check EGT sensors
- verify fuel quality
- inspect for exhaust leaks
FAQ
What does P2458 mean?
DPF Regeneration Duration. Common causes: Regen taking too long to complete.
How serious is P2458?
Caution — Limp to the next safe stop.
What's the most likely cause of P2458?
The most common cause is: Regen taking too long to complete. Other possibilities include Faulty temp sensors; fuel quality issue.
Can I keep driving with P2458?
Limp to the next safe stop. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Throwing this code right now?
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.