We read and analyze actual customer user reviews and pro evaluations from all over the Web — so that you don't have to — and show you the top-rated products.

Best OBD Scanner-Reader - ReviewsOBD1 and OBD2 Code Scanner Reviews

Why buy a OBD II code scanner-reader ?

First, an On-Board Diagnostic (OBD) device can save you a ton of money — and time. You can scan your own vehicle problems and avoid a lengthy expensive trip to a mechanic to learn that your gas cap is loose or needs to be replaced.  Diagnose the problem and fix it yourself.

Certainly, an OBDII code reader will cost you a little money up front, but the more you use it, the more you save on mechanics and high parts costs, the more the reader pays for itself.

In fact, it can pay for itself the first time you use it, depending on what the problem turns out to be.

An OBD code scanner can also help eliminate worry and surprises. If your “engine check” light keeps coming on and you find the problem is a faulty oxygen sensor, you know you won’t damage your car if keep driving it for a couple of days until you can fix it.

Most ODB scanners are easy to use. Simply plug it into the socket under the dash on any car, and begin checking. It’ll tell you if it finds problems and will display the codes. Some scanners translate the codes and others do not. If not, you can look the codes up for your vehicle online.

OBD-II / OBD-2 scanner error codes are indications of specific problems with your car. Your “check engine” light tells you nothing. It could indicate something very simple that would allow you to continue driving until you have the time to fix it, or it might be something serious that you should stop driving your car to prevent further damages.

Understand that OBD-II is an automotive standard but there can be differences in codes and code meanings between different carmakers. Although it can’t do the same things as a dealer’s more expensive test equipment, there’s still a lot you can do with a $40 ODB scanner. Therefore, an OBD-II / OBD-2 code scanner should be in everyone’s basic car maintenance tool box — if not in the glove box for on-the-road emergencies.

We have analyzed real owner/user reviews of OBD diagnostic code readers and have selected the top makes and models. To see the results, see below.

>>> Also visit our Shop for more OBD2/OBDII scanner/reader choices.

Best OBD Scanner - Code Reader

Autel MaxiScan MS300 CAN Diagnostic Scan Tool for OBDII Vehicles
Overall Rating:
Total Customer Reviews: (2,646)
List Price: $39.99
Sale Price: $16.73
Availability: Usually ships in 1-2 business days
The MaxiScan code reader supports all OBD2 protocols, including the newly released Controller Area Network (CAN) protocol. Though it is small, it is able to retrieve same information as large expensive scanners. This code reader reviews the emission readiness status of OBD monitors and determines the malfunction indicator lamp (MIL) status as well as turns off check engine light. It comes with free CD software with over 7000 DTC definitions and is powered via detachable OBD2 cable.
DiabloSport T1000 Trinity Dashboard Tuner and Diagnostic Tool
Overall Rating:
Total Customer Reviews: (65)
List Price: $720.00
Sale Price: $590.01
Availability: Usually ships in 1-2 business days
DiabloSport Trinity Dashboard Tune and Diagnostic Tools facilitate high speed USB connectivity, manage diagnostic trouble codes and incorporate real time data monitoring with advanced logging capabilities for delivery of data output to your PC or SD card. They include a 100MB of on board memory to preview PID or DMR data, two channel analog inputs for connecting external sensors and a high resolution color touch screen. These tools feature individual user customization and are user friendly as well as easily adjustable.
INNOVA 3140 OBD2/OBD1 Scan Tool with OBD2 Live Data
Overall Rating:
Total Customer Reviews: (314)
List Price: $477.51
Sale Price: $185.99
Availability: Usually ships in 1-2 business days
Equus Ford Code Reader Extension Cable for EPI3145
DiabloSport I1000 inTune Vehicle Programmer
Overall Rating:
Total Customer Reviews: (125)
List Price: $429.00
Sale Price: $379.94
Availability: Usually ships in 1-2 business days
The all new DiabloSport inTune is a revolution in the tuning industry. The inTune is the most affordable touch screen tuning device. It delivers an amazing user experience with easy to understand menus, automatic USB updates, and tons of vehicle specific features at an incredibly affordable price. Plug the inTune into your vehicle’s diagnostic port and it will automatically detect your year, make and model. The inTune will then provide you with a list of DiabloSport preloaded tunes including performance, economy and/or specialty cold air intake/custom tunes. The device offers users the ability to monitor stock sensors in a numerical  [Read More]
CarMD 2100 Vehicle Health System and Diagnostic Code Reader for OBDII Vehicles
Overall Rating:
Total Customer Reviews: (213)
List Price: $139.99
Sale Price: $79.83
Availability: Usually ships in 24 hours
Free Shipping Available
This product offers peace of mind for anyone who has ever worried about car maintenance and repairs. The easy-to-use device, which fits inside a purse or glove compartment, empowers drivers to monitor their vehicles health. The CarMD tool can be used to quick-check an unlimited number of vehicles. Within seconds, its color-coded (green, yellow, red) vehicle health monitor LED’s tell you if your vehicle has any hidden problems, which is beneficial when inspecting a used car, preparing for a road trip or to find out if you will pass your emissions test. Plug the tool into your Mac or  [Read More]
BAFX Products - Bluetooth OBD2 scan tool - For check engine light & diagnostics - Android ONLY
Overall Rating:
Total Customer Reviews: (2,607)
List Price: $23.99
Sale Price: $23.99
Availability: Usually ships in 24 hours
Free Shipping Available
ONLY “BAFX PRODUCTS” SELLS THE REAL ITEM!! —– BEWARE OF IMITATORS ——- THIS SCAN TOOL WILL WORK ON ALL 1996 AND NEWER 0BD2 COMPLIANT VEHICLES! UNLIKE SOME OTHER VERSIONS! Bluetooth scan tool for easy and informative engine scanning! Retrieve trouble codes, reset engine light and read MANY statistics not available with other scanning tools! Connects to your laptop or Android pone with Torque app! (Fee applies for app) Works on all makes and models! Package includes (1) Bluetooth OBD2 adapter and (1) CD with basic scan software – (full versions of software purchased anywhere on-line) Vehicle Coverage Works on all  [Read More]
ScanGauge II Ultra Compact 3-in-1 Automotive Computer with Customizable Real-Time Fuel Economy Digital Gauges
Overall Rating:
Total Customer Reviews: (546)
List Price: $169.95
Sale Price: $159.95
Availability: Usually ships in 24 hours
Free Shipping Available
The ScanGaugeII is a 3-in-1 automotive computer that combines a multifunction trip computer, diagnostic scan tool, and up to 37 digital gauges in one small package. It connects easily to your vehicle’s On-Board Diagnostic (OBDII) port and communicates directly with the vehicle’s computer. Not sure if your car uses OBDII or Controller Area Network (CAN)? The unit will automatically determine which system to use and switch to it. The ScanGaugeII works on all 1996 or newer OBDII cars, including gas, diesel, propane and hybrid vehicles, as well as vehicles with the  [Read More]
Actron CP9180 AutoScanner Plus Diagnostic Code Scanner with Live, Record and Playback Data Capability and O2 Monitor Test for OBDII  Vehicles
Overall Rating:
Total Customer Reviews: (148)
List Price: $282.99
Availability:
The Actron CP9180 OBD II AutoScanner Plus Diagnostic Code Scanner encompasses many professional features in an inexpensive scan tool. If you are new to diagnostic scanners, this handy tool connects to your vehicle, scans various parts of your car, truck or SUV, and retrieves a list of diagnostic trouble codes (DTCs) and code definitions from your vehicle’s computer. But even if you’re a veteran to scanners and auto repair, you’ll be impressed with the new functionality that Actron has added to the CP9180. This device not only scans your vehicle, it also  [Read More]
Actron CP9175 AutoScanner Diagnostic Code Scanner with Freeze Frame Data for OBDII  Vehicles
Overall Rating:
Total Customer Reviews: (90)
List Price: $258.99
Availability:
Is your car’s check engine light on? If it is, your car is trying to tell you something and the Actron CP9175 AutoScanner Diagnostic Code Scanner speaks its language. Use this scanner to unlock the information stored in your car’s computer. Whenever your check engine light is on, the device can chrome://gcstoolbar/skin/feedbackimg2.gif chrome://gcstoolbar/skin/feedbackimg2.gif pinpoint the problem so you can fix it fast and be on your way. The Actron CP9175 easily scans and retrieves DTCs. View details. Read and erase trouble codes with “hot keys.”   [Read More]
Actron CP9410 PocketScan Plus Diagnostic Code Reader for OBDII  Vehicles
Overall Rating:
Total Customer Reviews: (149)
List Price: $136.99
Availability:
When your Check Engine light turns on, find out immediately if you should stop or keep driving with the Actron PocketScan Plus OBD-II Code Reader with Urgency Indicator. There are many reasons that can cause this indicator to appear — from minor to critical — but the PocketScan Plus is here to provide you with the code information you need as well as an immediate recommendation on the urgency of the Check Engine Light problem. PocketScan Plus gives you the information you need. View Larger   [Read More]
INNOVA 3100 Diagnostic Scan Tool/Code Reader with ABS and Battery Backup for OBD2 Vehicles
Overall Rating:
Total Customer Reviews: (423)
List Price: $192.09
Sale Price: $84.10
Availability: Usually ships in 24 hours
Free Shipping Available
The Innova 3100 Innova CanOBD2 Diagnostic Tool is the DIY’s choice that also comes with many professional features. This easy-to-use tool connects to your 1996 and newer car, truck or SUV, and retrieves a list of diagnostic trouble codes (DTCs) and code definitions from your vehicle’s computer. You can also view freeze-frame data which shows the condition of the vehicle when the code was set which makes diagnosing the problem that much easier. Combine this with Internet connectivity and the ability to interface with a PC, and you have a powerful, professional diagnostic tool in the palm of your hand.  [Read More]
INNOVA 3030 Diagnostic Scan Tool/Code Reader with ABS for OBD2 Vehicles
Overall Rating:
Total Customer Reviews: (522)
List Price: $128.06
Sale Price: $52.49
Availability: Usually ships in 24 hours
Free Shipping Available
Designed to empower vehicle owners when it comes to maintenance, the Equus 3030 Innova Diagnostic Code Reader offers the perfect entry-level tool for quickly revealing Read trouble codes in a snap. See product details. the cause of “Check Engine” light warnings on any 1996 and newer car, light truck, or SUV–foreign and domestic. The tool features a unique, patented all-in-one screen display and an LED display for quick emissions status checks. Meanwhile, the 3030′s automatic refresh updates data every 30 seconds when connected to the vehicle, offering an easy way to verify repair  [Read More]