OBD-II code · Powertrain (generic, extended)
P24B3 Particulate Matter Sensor Heater Control Circuit Open
The PM sensor heater (regenerates the sensor by burning off accumulated soot) has an open control circuit.
Is it safe to drive with P24B3?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in heater or wiring
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
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 Heater
Related codes
- P24B0Particulate Matter Sensor Circuit Low
- P24B1Particulate Matter Sensor Circuit High
- P24B2Particulate Matter Sensor Circuit Intermittent
- P24B4Particulate Matter Sensor Heater Control Circuit Range or Performance
- P24B5Particulate Matter Sensor Heater Control Circuit Low
- P24B6Particulate Matter Sensor Heater Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.