Diesel Particulate Filter Efficiency Below Threshold (Bank 2)
Diesel Particulate Filter Efficiency Below Threshold (Bank 2): the control module has detected this fault condition.
Affected components
- Diesel particulate filter
- Dpf differential pressure sensor
- Dpf temperature sensor
Common causes
- High likelihood: DPF heavily loaded — repeated short trips prevent regeneration
- Medium likelihood: Filter substrate cracked or melted
Possible symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.