You check for them the same way you do generic OBD codes, but it requires a more advanced scan tool.
Typically your generic OBD codes are stored in the PCM/TCM. With very few exceptions, almost every dedicated module, or CAN/LIN network module has the ability to store it's own fault codes.
I'm generalizing right now, because I don't have schematics for your car in front of me. This is also why I mentioned a dedicated TPMS module earlier, because I assumed you weren't asking for something that doesn't exist. My mistake. Finding what I posted earlier took a total of 3 minutes on Google to find.
Your generic $18 hand held scan tool won't give you the codes you're looking for. Harbor Freight will sell one that can get them cheaper than most other places, but it's still around $100 for an entry level tool, and they can range over $5k for a name brand tool.
There's also the option to drop the cash and have a shop check it out for you. Most will charge one hour's labor (typically $60-$90, and up) to diagnose the issue, and then you can fix it if you decide to.
In all honesty, all of this is readily available information that can be found within a reasonable amount time of searching online. I can offer help if provided with fault codes, otherwise I won't be replying again.
