Code result
P2459
Diesel Particulate Filter Regeneration Frequency
Moderate severity
What it means
Active DPF regenerations are being requested more often than the calibration window allows. Indicates that soot accumulates faster than the filter can burn it off — typically due to short-trip use, leaking injectors, or excessive engine oil consumption.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Predominantly short-trip operation
highOne of the most commonly reported causes for this code — check this first.
Leaking injector raises soot output
mediumA plausible cause — test and verify before replacing parts.
High engine oil consumption (turbo seals, valve stems)
mediumA plausible cause — test and verify before replacing parts.
Related help
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