Particulate Filter A Incorrect
The ECM identifies the installed particulate filter A as the wrong part — backpressure signature, regeneration efficiency or coded part-number do not match the application. Common after a non-OEM aftermarket DPF or a wrong-application replacement.
Affected components
- Particulate filter a
Common causes
- High likelihood: Incorrect or non-OEM DPF installed
- Medium likelihood: Coding mismatch after part replacement
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
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.