How to Fix PCMTuner ‘Unable to Use Selected Interface J2534’

By | June 13, 2022


What’s this message of pcmtuner? this error appeared.
‘Unable to Use Selected Interface J2534 Scanmatik -SM2 USB’
Pcmtuner Unable To Use Selected Interface
Driver issue.
Delete and reinstall scanmatik driver
Free download PCMTuner driver
if not working,  clear everything and have a tidy place to work with just ECU and LAPTOP.
Disconnect everything. Restart laoptop. Turn on/off pcmtuner power. Restart pcm-flash.
Redo all connections SLOWLY and recheck. Then try to read.
You do not need a battery just use a power supply.