P246B: Vehicle Conditions Incorrect for Particulate Filter Regeneration
Standardized SAE J2012 code · P24xx — Auxiliary emission controls
What does P246B mean?
The driving pattern (short trips, low speed, frequent stops) does not provide the load and EGT needed for passive or active DPF regeneration. Filter loading rises until limit reached.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Common causes
- High Short-trip operation
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P246B on the same make and model first.
P246B in the community
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