This is on a 2009 Honda Civic EX Coupe, I'm trying to pull data from OBD2 in regards to the TPMS module, are the TPMS valve sensor data available via the OBD2 port? My Autel requires me to scan the sensors on the device before pulling data from the OBD2 port, the OBD2 port only seems to report the IDs for the sensors.

I'm trying to avoid having to scan the tires each time I want to get their pressure value.

Big reason I'm doing this is so I can build out a display at some point, but I need obd2 values or a tool that can provide this information so I have something to compare values/results against. Also my Tire Icon is flashing all the time, the IDs match in the ECU with what I have on the car, and all the tires are at the correct pressure. Yet It wont stop flashing, and there are no TPMS DTC reported on my Autel or my Innova tools. I'm at a loss, and I'd like to know more about the OBD2 interface and see about hacking up the can bus lines to gather more data behind the ECU.

 

Hi,
TMPMS CAN Bus messages can be read via OBD. Car has to be driven at a speed above 28 MPH (>45KMH) to awaken TPMS sensors.
If you have a CAN Bus stream (called Trace) - from Honda with working TPMS - please share. I could transmit it into one of my Honda Speedometers to see if TPMS Light goes off and then filter it out and find correspondent CAN Bus message (s).
I have done it on another car make and model - there was only one CAN Bus ID for all 4 wheels data.. Google search advises that some cars could have 4 different IDs. Cannot find info about Honda yet.