P24D1
Particulate Matter Sensor Regeneration Incomplete
A sensor regeneration cycle (heating to burn off accumulated soot) did not complete - sensor cannot return to measurement mode.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Regeneration aborted before completionCommon
Parts involved
- Particulate Matter Sensor
P24D1 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.