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I am a car repair engineer serving in for three years. I am here to share where to buy good quality and cheap car diagnostic tool or obdii code scanner, share how to use car tester and provide some solution to some specific problem of any diagnostic tool. As a engineer who have to answer a number of customers's questions everyday; I also wish I can find some solutions to some tough questions of car diagnostic tools.
Recent Activity

Question Asked: V-checker encounter "comm.error"
March 03, 2011, 03:26 AM
I bought a V-checker from www., it encounter "comm.error" 1 - Control Module Selection Screen OK 2 - Engine Electronics Selection Screen OK 3 - Can Bus Mode Selection Screen OK 4 - Can Bus Mode Communicate Screen OK 5 - Comm. error! anyone can help me?
Question Answered: Check Engine Light On
March 22, 2011, 01:22 AM
do you use a Toyota scan tool to do DIY work? I have a Toyota Carola, and the airbag light goes on one month ago, then I am recommended to buy online a MINI VCI from, I am here give you a link for your reference. I think it's ok for me.
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Comment: Check Engine Light On
March 22, 2011, 01:08 AM
just use some scan tool/diagnostic tool to turn off the check engine light.