Code result
P2002
Diesel Particulate Filter Efficiency Below Threshold
High severity
What it means
Diesel Particulate Filter Efficiency Below Threshold (Bank 1): the control module has detected this fault condition.
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
DPF heavily loaded — repeated short trips prevent regeneration
highOne of the most commonly reported causes for this code — check this first.
Filter substrate cracked or melted from runaway regeneration
mediumA plausible cause — test and verify before replacing parts.
Differential pressure sensor drift
mediumA plausible cause — test and verify before replacing parts.
Leak around DPF housing
lowLess common, but worth ruling out after the more likely causes.
Related help
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