This is for the Launch CR319 scanner, which is a good price at $22.I actually have a bigger and older Launch scanner maybe from 10 years ago or so that has helped out.I tried to use that in a 2003 Mercury, and it couldn't read the OBD2 for some odd reason, but I was very happy this CR319 scanner did read and give me codes.My past experience with Launch was good, and this product is also good.

Pesky "Check Engine" light?Other strange warning lights on your dashboard?Just curious about the internal data logging of your vehicle?Here's a relative economical way to check those codes.Clear them if it's a false-alarm.Know in advance if you need to schedule time at the shop - and not get snowballed when you get there.If the gearhead in your life doesn't already have a code reader in their tool-kit, this would make a good addition for them.

This code reader worked for my 1997 C1500 truck in diagnosing an engine performance, multiple misfire problem. I was thinking the problem was related to the mass airflow sensor. This code reader informed me that the mass airflow sensor was working correctly. Come to find out, there was excessive corrosion in the distributor cap. After replacing cap and rotor, engine is running great.

This is a very good scanner. I have couple OBD2 scanner which requires laptop. One requires serial port which non of my current laptop has. Another need USB to Serial cable which also needs driver which is very finicky. This LAUNCH OBD2 Scanner CR319 Scan Tool is awesome because it is standalone i.e.; it does not need any outside connection to the laptop. It does not require any battery either. It is very easy to use. Just plug it on the OBD2 port. Another big plus with this scanner is that the button is big. When you are working on your car with the gloves on, it is easy to use without removing gloves. If you work on your car, or want to know what is wrong with it, buy this scanner. It may pay for itself on the first time when you have to takeyour car somewhere.My car requires oil change on every 10k miles. After 5K miles, maintenance light comes on. When I take my car in every 5K miles in which time, they just inspect the car and reset the maintenance light, it cost more than this scanner. It pay itself when I do not have to take my car to the dealer.

Can reset/clear codes that trip the check engine light. Also can monitor the diagnostic tests as they reset from incomplete to ready/pass or fail.(Failing would throw another engine code)Great for DIY repairs before taking for smog check!