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CANBUS DATA

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(@obdnilsen)
Posts: 14
Eminent Member
Topic starter
 

Hello.

I have some info from my car. i know its tire pressure, But how do i use this info in OBD Terminal?

0x10(256) ********* is tirepressure value 242 rear tire.


https://ibb.co/GnQKWKL

its from a skoda octavia 2010 VRS

xeQted (C) 2025

 
Posted : 13/01/2024 8:01 pm
(@cintakc)
Posts: 1665
Noble Member
 

Does your car have a separate TPMS unit?
What protocol is available for diagnosing your TPMS unit, VWTP 2,0 or UDS protocol?

 
Posted : 15/01/2024 2:47 pm
(@obdnilsen)
Posts: 14
Eminent Member
Topic starter
 

Its UDS protocoll.

xeQted (C) 2025

 
Posted : 15/01/2024 6:49 pm
(@cintakc)
Posts: 1665
Noble Member
 

in the screenshot the VWTP2.0 protocol is more likely based on the ABS block

 
Posted : 15/01/2024 7:40 pm
(@obdnilsen)
Posts: 14
Eminent Member
Topic starter
 

Its from the abs block, your right.

But how can i send back to the canbus?

Can u help me with correct syntax?

xeQted (C) 2025

 
Posted : 16/01/2024 2:20 pm
(@cintakc)
Posts: 1665
Noble Member
 

did you take this data on the CAN bus of the diagnostic connector or on the internal CAN bus of the car?
You didn’t write your ultimate goal, do you want to get tire pressure data in TORQUE?

 
Posted : 16/01/2024 6:11 pm
(@obdnilsen)
Posts: 14
Eminent Member
Topic starter
 

its from VCDS, Its a gateway on the car so i have to cut the wires. i dont want that.

i want tire pressure info thats right, i want to use it on the arduino.

xeQted (C) 2025

 
Posted : 17/01/2024 12:47 am
(@cintakc)
Posts: 1665
Noble Member
 

try this

Sent "ATCAF1\r"
Rcvd "OK\r\r"
Sent "ATI\r"
Rcvd "ELM327 v1.5\r\r"
Sent "ATCAF0\r"
Rcvd "OK\r\r"
Sent "ATMA\r"
Sent " "

 
Posted : 17/01/2024 5:16 pm
(@obdnilsen)
Posts: 14
Eminent Member
Topic starter
 

All ok. But where is logg stored? Atma command?[

xeQted (C) 2025

 
Posted : 17/01/2024 7:48 pm
(@cintakc)
Posts: 1665
Noble Member
 

you must analyze the responses from the ELM327 programmatically in Arduino and, if you need, write the responses to the log

 
Posted : 18/01/2024 8:10 am
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