Diesel Particulate Filter Differential Pressure Sensor Range/Performance
The DPF differential pressure sensor signal is implausible compared to engine load and exhaust flow. Either the sensor or the pressure tubes leading to it are at fault.
Affected components
- Dpf diff pressure sensor
- Dpf pressure lines
Common causes
- High likelihood: Soot/water clogged pressure tubes
- Medium likelihood: Sensor drift
- Low likelihood: Sensor element aged beyond calibration window
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
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.