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Click here to find out which SensorSweep model is right for your vehicle. Even if your car is not on the list, that doesn't mean your car is not supported. Check with your car dealer before losing more cars are tested the list will grow. Until then just get the SensorSweep with the closest match and let us know what you think.

Use SensorSweep with the included software to perform powerful tests on your vehicle at a low cost


OBD-II port

*under dashboard*
Have you ever had a "check engine" or a "service engine soon" light pop-up on your vehicle?? Often, people dismiss the severity of this warning signal and choose not to do anything about it. How does your car know if there is a problem, anyway? You've probably heard about cars having on-board computers. Almost all cars built in the 90's and up have them. These computers control a lot of the cars functions. They also are connected to sensors, located through then engine, which relay vital information and stats about your car to a special "On board Diagnostic Port" (OBD) located underneath the dashboard. There are sensors for engine RPM, oxygen sensors, catylitic converters, and even air intake temperature. If any one of these sensors detect a faulty reading or a reading above or below its normal range the "check engine light" will appear. Not knowing which sensor is detecting the problem, the average person is forced to go through extensive troubleshooting or to take the vehicle to an authorized technician. A mechanic, using a special device can read from the OBD-II port and tell you the meaning of the problem light. Sounds simple enough doesn't? The only problem is you will probably get charged anywhere from $50-$100 per problem.

    SensorSweep is a device, similar to the ones used by professionals, used for extracting helpful information straight off of your car's onboard sensors. All vehicles, year 96 and newer, have the OBD-II (On-Board-Diagnostic *2nd generation) port. Vehicles before this year, however, may or may not have one or may have the original OBD-I interface. SensorSweep is designed for the OBD-II type.

WHY YOU NEED A SensorSweep
SensorSweep is needed because the codes coming out of your car's OBD-II port are not compatible with a computer. Using SensorSweep, a small hand-held device with ports at each end, your car's OBD-II port and your computer can be connected together allowing access to the hidden information inside your car. The "demodulated" signal is also compatible with laptops, which makes testing more portable. After connecting to the computer, a special software is used to provide a nice "user-friendly" interface that displays all the information in a real-time environment. The user can actually drive the vehicle while SensorSweep is connected. This makes it possible to see all sensor readings live. SensorSweep also gives you the power to turn off the warning signal light by reseting the problem sensor.

SensorSweep has two ports ( one on each end ). The one on the left side of the picture connects to the car and the other side connects to a computer or laptop. Both cables are DB-9 (*serial cables NOT NULL MODEM cables) and because of gender differences, cannot be plugged in wrong!

The device does not require it's own power supply! It uses the vehicle's power system and converts the 12VDC to 5VDC by means of an internal voltage regulator. This is all done through the OBD-II cable and does not require any set-up work. Just plug in and connect, its that easy. The green light shows the user that power is present. The red light flashes when communication is present between the car and the computer.

to comp The male end of a standard (NON-NULL MODEM) DB-9 cable (included with package) is plugged into the female serial port on a standard computer or laptop. The cable's other end connects to the female side of SensorSweep.

As you can see, differences in gender ( male/female ) prevent the user from making mistakes which could potentially cause major damage to your computer or car.

to car The OBD-II cable connects with the female OBD-II port located under your dashboard.


The completed set-up! Car and computer are connected through the SensorSweep.

Things to Remember:

(1)    **The computer you are using must have OBD-II software installed. This gives the computer the ability to display the information being sent to it's parallel port into human-usable information.

(2)    **VERY IMPORTANT*** The OBD-II cable does have a female DB-9 plug at one of its end.
DO NOTPLUG this into your computer. The connection from car to computer must be made only through SensorSweep. Remember... the voltage levels of the car are incompatible with those of a computer. Also, the encoding of the information is different. The car "puts out" a modulated signal. Another job of SensorSweep is to demodulate these signals into a form that your computer can understand.

The SensorSweep package comes with all of the following...

(1) OBD-II SCANNING DEVICE ( the SensorSweep UNIT )
(2) 1 DB-9 to OBD-II cable
(3) 1 DB-9 male to DB-9 female (NON NULL MODEM) cable
(4) Software for the computer... to view information and stats about your vehicle. (ON CD)

Remember, SensorSweep is a converter. It converts the information from your car into a "computer readable format". The software enables you to view these results. Some softwares display the information digital or in graphs and charts. The CD included with this package provides links to some of the top softwares out there for OBD-II scanning. Don't worry, there is an included OBD-II scanning software that is fully functional, but it may be beneficial to atleast look and other types out there. There are literally hundreds of free software downloads for OBD-II scanning.

Although all cars after 96 have the OBD-II port (since it was standardized), different manufactures use different "modulation techniques." To understand why please take a look below at the "technical" section.


A brief technical explanation - for advanced or curious users only...

    The picture above is an inside view of the device. At the ends of it's enclosure are two ports (DB-9 male and female). Each side connects to the corresponding cables ( which are included ) and then one side connects to the vehicle and the other attaches to a computer. The main chip (integrated circuit (IC) ) used in this picture is the ELM 322. This chip is the decoder of the circuit. Remember, the signals from the car are not compatible with a computer. The circuit converts the serial information stream into a serial transmission compatible with a PC (laptop, computer, ...) The converted signal consists of a stream of packets (each of 4 bytes ( a byte is 8 bits and a bit can either be 1 or 0) ) The computer reads this "binary" bit stream and can convert it into corresponding symbols. More advanced softwares ( like the one sensor sweep provides ) allows the computer to display this information in the form of graphs, charts, and digital readouts.
Since different cars use different modulation techniques, a different converter is required. Fortunately many manufactures have standardized and there are only three types of modulations. (what is modulation??) --- Modulation is a technique for encoding information in a different form. For example, for radio communications FM or (frequency modulation) is used to carry sound waves in the form of varying frequencies. AM, on the otherhand, (amplitude modulation) encodes information in the form of varying amplitudes or intensities. Each have there own advantages, but as a result different types of receivers had to be built.

Although all cars after 96 have the OBD-II port (since it was standardized), different manufactures use different "modulation" techniques. Please be sure to identify the type of SensorSweep you need. The VPW (variable pulse-width modulation) type is for GMC vehicles and "some" Daimler Chrysler cars... you'll definately want to check with dealer what type of port (VPW, PWM, or ISO) your vehicle has. the PWM type SensorSweep is intened primarily for Ford Motor Company Vehicles, and the ISO type SensorSweep is commonly used for MOST Daimler Chrysler ( this is not a mis-print) and "world-built" vehicles (imports) ... For any questions or concerns about whether or not your specific vehicle is compatible please E-Mail us at or check-out this chart of which protocol your car has. The protoc0l determines what type of SensorSweep you need. (VPW PWM or ISO). SensorSweep offers all three types of converters and all at the same price.

Similar tools can cost well over $250.00. This powerful, professional, compact tool with everything shown above is only $101.00 NEW LOW PRICE !!

This picture is the package you will receive when purchasing a SensorSweep. It includes ( as mentioned above ) the decoding unit, two cables, and a CD containing software.

SensorSweep - ISO

HITS SINCE 11/23/2003

Not sure which protocol you need?? Click here to find out.

Interested in buying in bulk? We offer discounts for purchases of multiple SensorSweep packages. E-mail us at for additional information.

An 8 dollar shipping and handling fee is automatically included to each item. If multiple items are purchased you will be refunded the appropriate amount.

SensorSweep OBD-II Scan Tool for the VPW protocol:

SensorSweep OBD-II Scan Tool for the ISO protocol:

SensorSweep OBD-II Scan Tool for the PWM protocol: