Equus 3030 Innova Diagnostic Code Reader for OBDII (Post-1996) Vehicles

Bought this product to reset codes and diagnose issues with my personal vehicles. It works great and is a wonderful add to my tool kit. I think I will start to charg everyone at work who wants me to read their OBDII codes!

Modern (post 1996) cars provide on-board diagnostic information. All car manufacturers use the format because it was mandated to make it easy to perform emissions tests.

The Equus Innova 3030 code reader retreives diagnostic codes from your car's engine and displays the error code(s) on its display. The 3030 does not need batteries either because it is powered by your car's battery via the OBDII port. You can then look up these codes in the manual or on the Equus website to get details of the problem. These codes enable you to determine what is wrong with the car and then take corrective measures. For example, if the code indicates a cylinder misfire and the spark plugs were recently changed, the cylinder misfire may indicate a bad spark plug. You can then change the spark plug for that cylinder.

This device will also clear the check engine light (CEL). This is useful when you have taken corrective measures, such as replacing a defective part, and you want to determine if you have solved the problem. Replace the defective part, clear the CEL, and run the car. If the CEL does not come on again, the problem is fixed. If the CEL comes on again, then the problem probably lies elsewhere so you might have to try replacing a different part.

This device is also useful for going to the auto mechanic armed with some knoweldge of the problem and will save you the cost of your mechanic having to plug in his much more expensive OBDII reader just so that he can make the same diagnosis.

The manual says not to turn on the car but I kept getting an error message when I plugged in the 3030 to my 08 Mazda with just the key in at the ACC position. However, once I started the car it worked fine, retreiving the error codes, displaying them, and allowing me to clear them. So if you get an error following the procedure in the manual, try turning the car on after you plug it in.

All in all, this is an excellent diagnostic code reader for the money. Highly reccomended.

No surprises. This diagnostic engine reader was easy to use. It reset the check engine light as advertised saving me $30 at the local repair shop for them to do the same thing. Why pay up to $100 for some repair shop to tell you why your 'check engine' light is on when this unit pays for itself with just one use. A quick search on the internet showed me where to connect it (for my car, it was above the brake petal). Just type the resulting code in any internet search engine and you'll find out in plain english what the problem truely is.

I saved approx 40 dollars with this purchase and another 100 dollars at least by diagnosing my problem myself. Turned out to be a 50 cent piece of hose that was making my engine light come on, on my 2001 Chevy Blazer.

This is a basic code reader thats easy to use, and it comes with good documentation.