Particulate Filter Pressure Sensor A and B Correlation
The two DPF differential pressure sensors A and B disagree by more than the diagnostic tolerance - one of them has drifted.
Affected components
- Dpf pressure sensor a
- Dpf pressure sensor b
Common causes
- High likelihood: One sensor has drifted
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
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.