One customer bought a Yanhua Mini ACDP programming Bluetooth Adapter to work with his Mini ACDP. But there was something wrong when he ran Mini ACDP on his computer. It showed “Open serial port failed, please check whether serial port is occupied”, and he also found that “PL2303HXA PHASED OUT SINCE 2012” as below.
Obdiitool.co.uk engineer offered the related solution.
Please follow the steps to fix PL2303 error.
Step 1: Install PL2303 driver
PL2303_Prolific_GPS_1013_20090319.exe
Step 2: If it shows a yellow exclamation mark in Device Manager, that means the driver is abnormal. Then right-click and select “Update Driver”
Step 3: Select the driver file manually
Step 4: Select the driver file from the driver list
Step 5: Select the older version of the driver file in the list
Step 6: If it doesn’t display yellow exclamation mark in Device Manager, that’s fine.
Step 7: Driver is normal.
Hope it helps!
