Diesel Particulate Filter Pressure Sensor Circuit
A general electrical fault on the DPF differential-pressure sensor circuit. Without a valid pressure reading the ECU cannot estimate soot load and may inhibit regeneration.
Affected components
- Dpf differential pressure sensor
- Dpf pressure sensor wiring
Common causes
- High likelihood: DPF pressure sensor failed
- Medium likelihood: Sensor sample hoses clogged with soot
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.