P24BO ISO/SAE Reserved Error Code

[rspeers]

The check engine light came on while driving so I looked up the code on my CTS3 and this is what showed up. It would not give me the option to clear stating it was reserved. Can anyone tell me what this refers to? I have not talked to a dealer yet hoping for info from here.

 

[MarkEagleUSA]

Google says Paticulate Matter Sensor Fault

https://www.google.com/search?q=obd+p24b0

 

[PRS]

Check the fuse labeled Urea Sensor/PM Sensor. F61 on my 2020. Maybe different on yours.
Check the voltage across pin 1&2 of the PM sensor connector with the key on. Should be within 1 volt of battery voltage.
If ok
Clean the connector with contact cleaner, reinstall and drive it again.

 

[rspeers]

Paticulate Matter Sensor had low voltage.