MAXISCAN MS300 display on the LCD, as described in the manual.

I thought I had a bad unit with LINK ERROR on two different cars. You will never see the MAXISCAN MS300 display on the LCD, as described in the manual. Here are the real steps to follow: 1. With the ignition off plug it in. I immediately saw CAN OBD2 on the LCD. 2. Turn the ignition switch to the ON position. This is the position just before you crank the starter. Do not start the vehicle. 3. Then press the ENTER button on the reader which starts the scan. 4. Use the SCROLL button on the reader to view the results. This is a handy tool, but almost any auto parts store will do a free code scan for you (Auto Zone, O'Reilly, Champion...), so that might be a cheaper way to go if you don't expect to use it much. An auto repair shop can charge you $100 or more to do the same, depending on where you are in the country. The manufacturers website http://www.auteltech.com/index.htm and manual appear to be done by a novice "Chinese to English" transalator, so can be cryptic as best and totally misleading at worst. Note that just resetting the code will not let you pass inspection. The sensors have to return a ready/OK code for the emissions test. It takes driving several miles for the sensors to retest and get back to the ready/OK status.I had a check engine light on my Toyota Camry 2001. I did a little research and found out that a computer scanner called an OBD II can be used as a diagnostic tool for most cars on the road today (1996 and newer with some exceptions). I decided to buy this affordable scanner rather than pay a mechanic $70 to $100 (plus sales tax, shop fees, and all their other nickle and dime fees) to read the code. When I got the Autel MaxiScan delivered, I read the instructions a couple of times. Then, I went out to the car and looked for the place to plug it in, which was right under the steering wheel. I plugged it in, turned the ignition key half way, pressed a few buttons on the scanner, and presto! It read P0401, which means egr flow insufficient. As it turns out, that is a common problem with 2001 Toyota Camrys. I cleared the engine light with the scanner, and unfortunately the engine light came back about 125 miles later. The P0401 code also came back.

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