Diesel Particulate Filter Pressure Sensor Circuit Range/Performance
The DPF differential-pressure sensor produces a value that is electrically valid but does not match expectations — for example a non-zero reading with engine off or no change between idle and load.
Affected components
- Dpf differential pressure sensor
- Dpf pressure sensor wiring
Common causes
- High likelihood: Sample hoses clogged or kinked
- 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
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.