OBD II UART not working !

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1

Hello,

I followed the guide to the letter ( https://learn.sparkfun.com/tutorials/ob … -guide/all ) but neither directly connecting to serial or through an Arduino works!

here is my setup:

uart obd.jpg
uart obd.jpg1152×2048 233 KB

when i monitor the serial port all I see is that I am sending the “ATZ” command and nothing else

the Arduino is indefinitely stuck at getResponse();

Can someone tell me how to debug the problem ?

Thank you!

2

It sounds like it might have defective firmware; head over to Return Policy - SparkFun Electronics and fill out the form (if purchased from us, if from a 3rd party simply contact them) and we’ll send out a replacement