Code result
P24FD
Particulate Filter A Incorrect
Moderate severity
What it means
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.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Incorrect or non-OEM DPF installed
highOne of the most commonly reported causes for this code — check this first.
Coding mismatch after part replacement
mediumA plausible cause — test and verify before replacing parts.
Related help
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