On-Board Diagnostics-II (OBD-II). Questions usually involve scan tools, their use and their compatibility, as well as how to interpret Diagnostic Trouble Codes (DTCs).

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Calculating MPG from MAP sensor (or converting MAP data to MAF data)

My 2002 Honda Accord V6 has a Manifold Absolute Pressure sensor (MAP). I understand that this sensor gives out information in pressure units (psi or equivalent). After doing a bit of research, I ...
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222 views

OBD 2 Fuel reading says No Data

I wanted to read fuel level from the car and display it on my app. I'm using ELM327 bluetooth adapter to communicate with my car. When I'm sending the code "012F\r" to my OBD 2 it says "NO DATA". ...
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824 views

Mercedes Atego OBD2 live data codes

I have tried to connect an OBD2 ELM327 adapter in Mercedes Atego. Somehow I managed to get it in that OBD2 connector. I can see that my adapter is receiving electricity. These are the PID's that I ...
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917 views

Fuel Consumption and other Fuel related data from basic OBD-II parameters

I want to know how can i obtain the values of Fuel Consumption, Fuel Economy and other fuel related information from basic OBD-II parameters like Vehicle Speed, RPM, TPS etc. I have noticed that not ...
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138 views

Remote Car Climate Controller

I am investigating the possibility of monitoring and controlling the car cabin temperature using GPRS. I will be using Arduino Uno and GSM shield to communicate with an Android App. The arduino works ...
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165 views

Error Message from OBD-II (7F 01 11)

I have been extracting OBD-II DATA from UART board (ELM327) on my TOYOTA INNOVA. It responded correctly few weeks before and gave all supported sensor values. But now, for every response, ECU responds ...