Code result
P2458
DPF Regeneration Duration
High severity
What it means
The DPF regeneration cycle takes longer than the calibrated maximum. The ECU sets this code when the soot load is not being burned off within the expected window — common after many short trips or with degraded post-injection.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Heavy soot load, short trips
highOne of the most commonly reported causes for this code — check this first.
Post-injection insufficient
mediumA plausible cause — test and verify before replacing parts.
Related help
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