OBD-II code · Powertrain (generic, extended)
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.
Is it safe to drive with P24D1?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyRegeneration aborted before completion
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Likely to fail
- Parts involved
- Particulate Matter Sensor
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.