P2464
Diesel Particulate Filter Differential Pressure Too High
The differential pressure across the DPF exceeds the calibrated upper threshold during operation. Indicates severe blockage of the filter element.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: hard
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Common causes
Ordered by how often each turns out to be the cause.
- DPF heavily cloggedCommon
- Blocked pressure sensing lineLess likely
Parts involved
- Diesel Particulate Filter
- DPF Diff Pressure Sensor
- DPF Pressure Lines
P2464 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.