Autel MaxiScan MS409 Very Affordable OBD-II Tool.

Autel MaxiScan MS409 Very Affordable OBD-II Tool.
Can't beat the price for this OBD-II scan-tool. There are cheaper (cost) versions out there, but the websites are very questionable (poor web design, shady return policy, and distrustful e-commerce). For the price and reputation of Amazon are the factors for purchasing the scan-tool here. The tool comes with a quality travel pouch, OBD-II cable, USB cable (for scan-tool updates), and a manual. What's really cool about this version is the "Freeze-frame" data feature. I had a P0401 (EGR Insufficient Flow) code and the freeze-frame data is a "snapshot" of the factors leading to the code. I was able to use the data to troubleshoot the problem to a defective ECT (engine coolant temperature) sensor--odd isn't it? My recommendation is to get this version of the scan-tool. Other versions that just display the DTC (diagnostic trouble code) would give one the sense that the EGR should be replaced. The ECT sensor was $15 rather than mistakenly replacing an EGR that costs $150, only to find the problem wasn't the EGR. The tool is just a diagnostic tool and not an "answer" tool, so it only helps with the trouble isolation effort. I chose this product over the real-time version, because the freeze-frame data is sufficient to troubleshoot a DTC. While I could have taken the car to a auto parts retailer (who can scan the code for free), their primary business is to sell parts. Not to mention, the auto "stealership" is out to sell parts and service. This was a great investment, because all vehicles 1996-onward must support OBD-II. I will certainly have a car until I die, so the tool pays for itself in just a few DIY automotive troubleshooting.