P24C6Particulate Matter Sensor Temperature Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- Inside the particulate matter sensor a meander-shaped platinum track measures element temperature, which the sensor needs to control its heater. P24C6 is the general circuit fault of that temperature signal. Ford's 2023 diesel summary flags a signal below 0.3 V or above 3 V for 2 s; VW's 2014 Touareg list and GM's 14OBDG04 table use the same band (GM Type B). On the 2018–2019 CX-5 SKYACTIV-D 2.2, Mazda (bulletin 01-005-22) links it to condensate cracking the element, sets it after one drive cycle and supplies a revised sensor. Ford fits a new sensor under 18-2225 (Super Duty 6.7L, 2017–2018), and GM special coverage 16018 covers 2014–2015 Cruze diesels. P24C8 and P24C9 split the fault into low and high.
- What you may notice
- Malfunction indicator lamp on
- Particulate filter monitor does not complete
- Likely causes
- LikelySensor element cracked by condensate
- PossibleOpen or shorted temperature line in the harness
- RareFault in the sensor control unit
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €150 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.