P24B7
Particulate Matter Sensor Heater Resistance
The resistance of the PM sensor heater is outside the calibrated band.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Heater element agedCommon
Parts involved
- Particulate Matter Sensor Heater
P24B7 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.