When a car problem occurs, the first step is to trouble shoot the related system. Then, perform simple tests that can lead you to the cause of the malfunction and the repairs needed to correct the problem. Sometimes You need the right test equipment. There are many different automotive  Code Readers  to choose from. Select one that meets your needs. > Scan Tools

Equus CAN and OBDII Code Reader
EQUUS CAN AND OBDII CAR READER SCAN TOOL -- Links to all OBD2 protocols including CAN to decode check engine light problems; Automatically updates data every 30 seconds when connected to the vehicle; Features unique patented all-in-one screen and LED display for quick emissions check; A perfect entry-level tool designed to empower vehicle owners when it comes to maintenance; Works on all 1996 and newer domestic and import vehicles; With Equus' 1-year limited warranty.
Equus Code Reader Kit
EQUUS CAN AND OBDII/I SCAN TOOL KIT -- Features unique patented all-in-one back-lit screen display which shows 25 parameters at once without the need to scroll through time consuming menus; Automatically updates data every 30 seconds when connected to the vehicle; Has 3-color LED display that signals vehicle's readiness for an emissions test; Designed with Hot Keys that give user the ability to quickly jump from one function to the next without scrolling through multiple commands or menus; Uses three AA batteries for off-car review and analysis;

Equus Scan Tool
EQUUS CAN AND OBDII SCAN TOOL -- Communicates with all OBD2 protocols including CAN, ISO 9141, J1850PWM, J1850VPW, and KWP 2000 ISO 14230-4; Retrieves OBD2 DTCs including P0, P2, P3, and U0 generic codes and P1, P3, and U1 manufacturer specific codes; Provides SAE enhanced Live Data which can view, record, and play back live PCM data streams;Features unique patented all-in-one screen and LED display for quick emissions check; Displays freeze frame data;
Actron Code Reader
ACTRON ELITE AUTOSCANNER -- CAN compliant; Includes OBD II cable, USB cable, 8-foot extension cable, CD manual, and registration card; A Trilingual OBD II Enhanced Scan Tool with menu options for English, French, and Spanish; With large, backlit, and graphic screen for clear display of data; Reads, records, and playbacks live sensor data; Displays MIL status, summary recap of scanned vehicle's emission readiness status, PCM-stored generic and manufacturer specific DTCs, and the trouble code information with its definitions including the OBD II enhanced coverage;

A scan tool with enhanced diagnostics can save your a lot of time and worry and allow you to do most of the troubleshooting from the drivers seat.

If you have a 1996 or newer vehicle, you have OBD II. But just because it's generic and the connector will plug into your car doesn't mean any scan tool will work on your car. If you have a 1998 or later European vehicle the scan tool will need a software upgrade. Another potential problem vehicles are Korean and the scan tool may need software upgrades to read them correctly.

There are several brands of scan tools, each with different capabilities and options. If you decide to purchase one for your use, shop around and get the one that will serve your needs.

As anyone with a household PC knows, "plug and play" doesn't always work, and OBD II scan tools can encounter compatibility problems. Some European and Korean cars don't always work when they're supposed to. How can you tell? Checking a scan tool manufacturer's Web site for updates is the way to keep your tool current.

  It's many years since OBD II has come out and the early vehicles are now out of warranty. OBD II is a very complex system and I can only scratch the surface here, but hopefully it is a little less of a mystery now. Modern OBD II computers are a lot better than the early ones and are getting better every year. They can detect more problems and are much better storing the DTC's it finds.

The OTC/SPX Genysis carries the highest level of diagnostic information available to date. SPX creates the software that is used to operate the vehicles and has the most up to date software available. Although the most expensive of the bunch, you do get what you pay for. The Nemysis is the little brother to the Genysis and is less expensive but as suspected does not offer as many features.

The OTC Nemysis is the latest scan tool developed by OTC/SPX Corporation. Nemysis is an automotive scan tool designed and powered by Genysis technology. Nemysis covers early OBD I systems and all OBD II protocols, including the newly released Controller Area Network (CAN) protocol. Can protocol was introduced in 2003 model year vehicles and is the mandated protocol in all new vehicles by 2008. Matco Tools calls the nemysiss PRO SCAN PLUS. See the all New Pegysis From OTC.