Best Code Readers & Scan Tools in 2022

Last update: November 15, 2022

Are all OBD readers the same?

No, all OBD readers are not the same. Some are better quality than others and some are more expensive.

Can I use my phone as a car code reader?

Yes, there are a few apps that you can download that will allow you to use your phone as a car code reader. These apps will work with most popular car models and can read the codes from the car's computer.

Can you damage your car using an OBD2 scanner?

An OBD2 scanner is a tool that is used to diagnose and troubleshoot problems with a vehicle. It is also used to reset the check engine light. While an OBD2 scanner is a useful tool, it can also damage your car if used improperly. If you use an OBD2 scanner to reset the check engine light without first fixing the underlying problem, you may be causing further damage to your car. Additionally, if you use an OBD2 scanner to diagnose a problem and then attempt to fix the problem yourself, you may end up causing more damage than

Do cheap code readers work?

There are a lot of different code readers on the market, and their prices can vary quite a bit. But just because a code reader is cheap, does that mean it won't work? In general, you get what you pay for with code readers. The more expensive readers will usually have more features and be more accurate than the cheaper ones. That said, there are some decent cheap code readers out there that can get the job done. So, if you're on a budget, a cheap code reader may be worth a try. Just be aware that you may not


Autel AutoLink AL319 OBD2 Scanner Automotive Engine Fault Code Reader CAN Scan Tool Review:


Dear all, The fact that I frequently had to visit AutoZone or PepBoys to learn why the Check Engine Light (CEL) was on was starting to irritate me. I went ahead and completed my research to see which one I should buy because sometimes they would even charge me to do so. I was searching for a scanner that would be able to read ALL OBD II-equipped automobiles, tell me what the code meant, and allow me to clear it. All of that was accomplished using this scanner, and I'm satisfied with my purchase.Here are a few things I did right away after receiving the device in the mail. To update it to the most recent firmware, I downloaded the program (Maxi-Link v1.04) from their website, plugged it in with the included USB cable, followed the instructions, and it was updated! To my surprise, they also included a DTC Lookup manual in their program. This was really helpful to have in case you forgot what the code description was or if someone knew the code but didn't know what it meant. The DTC query contained P0, P2, P3, U0, and U3 codes; P1, P3, and U1 codes require more investigation because they are manufacturer-specific. The ability to see freeze frame data with this scanner is another amazing tool, and the I/M Monitor is also quite helpful.The LED screen is a great addition because some scanners, sometimes even more costly ones, don't even have an illuminated screen. However, I simply wish that the ENTER/EXIT and Scroll buttons had lighting as well, so I wouldn't take away a star for that.I did a lot of research, as I mentioned earlier, so here are some explanations for why I selected this product above the alternatives.I had friends and family that owned bluetooth scanners, and they all had negative experiences with them. BAFX Products 34t5 Bluetooth OBDII Scan Tool for Android Devices - This didn't stop me from wanting to get one, but I didn't because I had to use an app on my phone or tablet, and I detest scanners like that.Although it was incredibly small and portable, the Oxgord CAN OBD II Scanner Tool for Check Engine Light



LAUNCH OBD2 Scanner CR319 Scan Tool Universal Automotive Engine Fault Code Reader Checks O2 Sensor and EVAP Systems, Supports Mode6 Review:


Every shade tree mechanic's toolbox should have a Launch Creader 319 OBD2 Scanner, as it will pay for itself the first time you use it. I purchased this one to replace an outdated reader that is 20 years old. This scanner covers all OBD issues and scans from Mode 1 to Mode 10 (0A). Although surfing the internet for DTC meanings is no longer necessary for some specific auto manufacturer's codes, a built-in DTC lookup table still requires some searching.It beats out many scanners of a similar price because of its color screen and very readable display, which I particularly like. The device may be held comfortably in one hand, and the control buttons are reachable with the same hand. Overall, this scanner is arguably the best available for the money.



ELM327 FORScan OBD2 Adapter, OHP ELMconfig OBDII USB Scan Tool for Ford Cars & Light Trucks Year 1996+ Diagnostics, Windows Only - Comes w/ MS/HS-CAN Toggle Switch, Installation Guides & Instructions Review:


In my 2016 Escape, the battery expired. I discovered that following replacement, one should reset the Battery Management System so the PCM is aware that a new battery has been placed when I was investigating how to change it (not as straightforward as it could be...). Naturally, this cannot be done without specialized equipment. The BMS was meant to be able to be reset by the free program "Forscan," but only with ELM327 OBD-II interfaces that were compatible. I chose this one after doing some additional study. I'm delighted to announce that Forscan, which was able to connect to the Escape using this OBD-II interface and reset the BMS on my MacBook Pro running OS X 10.13.6 while operating under Parallels in XP. Happy Dance!The reason I only gave the product 4 stars is that the HS/MS switch's label is reversed. The switch was also faulty. Overall though, it appears to function as promised.



BlueDriver LSB2 Bluetooth Pro OBDII Scan Tool for iPhone & Android Review:


I installed the App on my iPhone SE after downloading it for free from the iTunes Store. Both the download and installation were flawless. A 2013 Chevy Silverado pickup with the Check Engine light on was used for the initial test. The "Vapor Recovery System" was where the problem was located when I scanned the codes. Although I was already aware of this problem, the troubleshooting manual suggested checking the gas cap. The Check Engine light was turned off after we adjusted the cap and reset the code, and it hasn't come back for a month.Since I bought the BlueDriver in June 2017, I continuously have the module connected to the OBD2 port on my 2011 Mercedes GL350 (Diesel). The SUV I use to haul a trailer allows me to keep an eye on the engine as we move along. Because I am a mechanical engineer who studied automotive engineering at Oregon State University in 1972 (Beavers), the more than 70 parameters that were supported in the logging mode did not intimidate me.Because I can track Engine Oil Temperature, Boost Pressure (absolute), Fuel Useage (GPH), Boost Air Temperature, and Atmospheric Pressure, I adore the real-time recording option.In the middle of nowhere in Idaho on Highway 93, the engine died yesterday as I was towing the trailer once more this week while the real-time logging was going. I glance at the BlueDriver app now that we are stopped and I can see a warning that the fuel pressure is low. My wife calls our subscription towing service as we magically locate a place to safely pull off the 2-lane (no shoulder) highway. Additionally, I can smell diesel, thus I am aware of a leak. My wife starts the engine as I open the hood, take off the attractive cover, and inspect what's happening. I cry, "STOP!" as I can see petrol streaming out. It's a good thing it's diesel today since it's hot. The towing firm informs me that they will arrive in 10 hours. I begin searching for a damaged gasoline hose or connector. The connector appears to be in fine shape, but the wire clip on the female side has broken off. I search the engine compartment for it, find it, get it, put it back in, and reassemble the connector. My wife starts the car again, and there is no leak. We then put on the attractive cover, cleaned the area with Simple Green and a paper towel, and drove away. I'm so grateful to the BlueDriver, which was plugged in, logged, and directed me to the right place!



BAFX Products - Wireless Bluetooth OBD2 / OBDII Diagnostic Car Scanner & Reader Tool for Android Devices - Read/Clear Your Check Engine Light & Much More Review:


I purchased this to identify a P0420 code that my car had been intermittently emitting for roughly six months. I had it scanned at an auto parts store and received the initial code, but I would have had to take it to the repair and pay $45 an hour for a diagnosis (I get a discount). I looked around for a scan tool, but when I searched on YouTub, I discovered items that performed the same functions for a much lower price. In my weeks-long search for a solid one, this product emerged as one of the best low-cost options, and BAFX seemed like a trustworthy firm, so I purchased it.A setup and troubleshooting manual, packing peanuts, and a tiny compact disc that I assume fits in a CD-ROM drive were all included with the tool when it arrived in a plain white box (never tried it). The tutorials were helpful in understanding the fundamentals of first setup. They have no problems at all. Any Android smartphone or tablet will work as long as it has the necessary operating system (even older ones). Basically, you put it into the DLC port found under the dash of your car, watch for the red light to appear, then turn on Bluetooth and look for the gadget. It ought to seem as an odd name or an OBD scanner. You only need to enter the passwords 1, 2, 3, and 4 to connect. Simple. For this to function, an app is required (Android only; iOS is not supported!). I paid $4.99 for Torque Pro when they suggested it (well worth it, the lite version is pretty much useless). Although Torque is the greatest, this app also works with other ones. Once the software has started running, it will navigate to settings and set the adapter. It will establish a connection and begin sending data from the car's computer.For being less than $30, this item is incredible. Since it reads every PID from the car's computer, every sensor that the computer keeps track of will also be read. The reader only accepts generic and vehicle-specific emissions and power train data because it is an OBD II reader (for automobiles manufactured in 1996 and later). For ABS and airbags, it won't read the SRS and chassis codes. For such, a more expensive, specialized tool is required. All of the engine sensors for my Subaru were read, with the exception of oil pressure and DC voltage. Additionally, it can read codes and clear them. Refreshing the sensor data happened fairly quickly. I never experienced any connectivity problems when using this.I use it to monitor the coolant temperatures because the head gaskets on my car are leaking. If your catalytic converters are failing, you can check the oxygen sensor data if you have a P0420 error number. Use it to identify a bad o2 sensor heater in a P0430 error code. The first time you utilize this tool to perform a repair yourself rather than hiring a shop or dealership, it will have paid for itself four times over. For a do-it-yourself mechanic like myself, it is priceless.ProsInexpensiverapid sensor reloadsuperiority 1-year warrantyreads codes and clears themreads current datatrustworthy connectionsConsjust decodes and reads OBD sensorsLack of support for chassis codes, SRS, or ABSiOS is not supported.You should keep this in your glove box or toolbox. Good for DIYers or experts. My favorite. It accomplishes what it claims to at a fraction of the price of a specialized scan instrument. Yes, you need a tablet or smartphone to use it, so if you don't have one, there's a case to be made for purchasing a handheld scanner. However, for those who have, this is an excellent tool.



OBDLink MX+ OBD2 Bluetooth Scanner for iPhone, Android, and Windows Review:


Buy this right away if your car is on the list of advanced diagnostics. Don't give it a second thought; I assure you that you will be delighted with it. Upon starting up, the dash cluster of my 2007 Yukon Denali displays a service suspension problem notice. It cost at least $799.00 US to purchase a scan tool that explicitly claimed to be able to read those codes in the suspension computer. This will both define the code in question and pull it into question. Although it is stated in the documentation that it will not work on all vehicles, anyone who has experienced a car problem that went beyond a SES light will understand. It accomplishes everything with the provided app (comes when you buy this). To my fellow shadetree mechanics: be aware that the app in issue operates more slowly than you might anticipate. ( I have to update the firmware after approximately a minute to an hour to get the relevant codes. However, it will communicate with every single module in the car—I mean, including the one that manages the heated seats. Controls in both directions are available for my car. I've used matco scan and snap on tools. I've even used the GM Techtool2, which is the OEM scan tool for my SUV; this one is neither better nor worse than others, but it actually does the job. It moves quickly but doesn't always respond right away, so you'll need to exercise some patience. Nevertheless, it will get you where you want to go. To find out if your car is covered by the sophisticated features, visit the company's website. If so, the possibilities are endless. If not, it is still a useful tool to have around. You will receive a ton of diagnostic information on the engine and real-time monitoring (better than any other scantool at twice the price.) Thank you to the staff at OBDLink for allowing me to work on my car once more. It is very incredible that for only $80.00 US I can view all the information and operate the bidirectional controls like a scantool costing $10,000 US. It is completely worthwhile.



Veepeak OBDCheck BLE OBD2 Bluetooth Scanner Auto OBD II Diagnostic Scan Tool for iOS & Android, Bluetooth 4.0 Car Check Engine Light Code Reader Supports Torque, OBD Fusion app Review:


I adore it because it can access the computer and send the info to the OBD Fusion app. That represents a serious failure in terms of dependability. When I first installed it, it would only maintain a connection with the app for a maximum of 1-2 minutes. After some time, it became better and could maintain a connection for 20 to 30 minutes, but today afternoon, during the roughly 20-minute drive home, it dropped connectivity six times. It wouldn't be a major concern if I could just rejoin using the app, but I have to pull the adaptor, plug it back into the OBD Port, and then I can reattach the app. This morning, I contacted Veepeak about the problem, but six hours later, I still have not received a response. I'll change my review to five stars if they offer a solution that fixes the connection problem. It functions perfectly when it is connected.EDIT!! When I got up this morning, support had responded to my email from yesterday with a link to download their app and update the adapter. I did that this morning, and as of right now, I've driven for around 4-5 hours with the truck running continuously with NO PROBLEMS. You should take the time to contact Veepeak about the reports you saw regarding the gadget losing connectivity. They did an excellent job of assisting me in solving the problem!



FOXWELL NT201 Auto OBD2 Scanner Check Car Engine Light Code Reader OBD II Diagnostic Scan Tool Emission Analyzer(New Version) Review:


This neat little automobile accessory is great. I know the name brand is reliable because I formerly owned the more expensive foxwell unit and it lasted for a while. Since it was a Foxwell, I decided to give this less expensive unit a try since I did not have the additional $90 to spend on the more expensive unit this time. It performs nearly identical duties to its sibling unit and does clear codes. Currently, my cats are clogging, which causes the o2 sensors to go off, but it only results in more gas being wasted. So I'll have to clear codes to save on gas until I can afford the $500 cat setup. I think this device is a life saver because it functions just as well as its sister unit. It's great to learn what's going on with one's car without having to spend a fortune visiting a mechanic. I work on cars myself, therefore having a Foxwell code scanner equipment is essential.



Autel MS300 OBD2 Scanner Code Reader, Turn Off Check Engine Light, Read & Erase Fault Codes, Check Emission Monitor Status CAN Diagnostic Scan Tool Review:


This tool's purchase price of $13.78 with free delivery has already been repaid. On three different autos, I've identified codes. The first was a 1998 Mazda B2500 that had three codes that were all related to a lean fuel condition caused by a leaky intake manifold gasket. I did observe that the reader was just barely plugged into the obd2 socket on the Mazda, but there was no problem with the other vehicles.The second car, a 2002 Lexus LS430, revealed that I had a defective oxygen sensor.After replacing the sensor and clearing the code, the check engine light disappeared after a week. problem resolvedThe third car was a 2002 Chevy 2500HD. As seen in the pictures below, the reader displays two separate digits below the DTC; in my case, there were five codes. The first number indicates the order in which the codes were set, and the second number indicates how many codes were set.The reader discovered DTC P1683, a manufacture code signifying "PCM has to be reflashed," as seen in the image below.Additionally, code P0327 - defective knock sensor bank 1 of a defective connector or harnessIt may seem as though the scanner cannot communicate when used on Honda and Toyota cars; nevertheless, if you wait a few minutes, the scanner will eventually read these cars.Simple to use1 connect to the obd2 connector2 then start the engine ( works just the same if you start vehicle )3 Press the scroll button to bring up the (1)-dtc. 4 Press enter to read the codes. Once "erase" appears, click enter and use the scroll key to answer a yes or no question. input ket to indicate "yes"If you check for codes again on the scanner, they will still appear as pending; however, if you unplug the scanner from the plug (power) and plug it back in, the scanner will read no codes. Once codes are cleared, start the vehicle to ensure the CEL is no longer illuminated.The reader was best of all left outside on a bench over night during a downpour. I dried it off, dried it with compressed air, and kept it in a ziplock bag with rice for several days. I plugged the reader into the obd2 port, and it functions exactly as it did when I initially got it. Pictures could be hazy because I captured them at night with my iPhone's flash.With this buy, you can't go wrong.



FOXWELL NT301 OBD2 Scanner Professional Enhanced OBDII Diagnostic Code Reader Review:


Why bring your automobile into a garage so they can diagnose the issue for you? Then be concerned if they are making up a problem entirely or just a small one in order to make more money. You can now determine whether you actually need to take it in. I've previously tried a few other fault code readers. They did, however, this one works much better. Reading the coding and navigating the options were both fairly simple. Particularly for someone like me... who is better off doing things around the house than working on cars.My automobile had a problem, and I was able to determine whether I needed to bring it in. But I didn't feel like I was being taken advantage of. Thus, I address you! If you're tired of worrying, praying, and hoping you don't get taken advantage of... Grab a Foxwell trouble code reader and be certain that your car needs some maintenance. OR! Do you know how to repair your own car? You know what you need to buy to fix your car; just grab a Foxwell.


Does AutoZone do OBD scans for free?

Yes, AutoZone does offer free OBD scans. However, it is important to note that not all AutoZone locations offer this service. Additionally, some AutoZone locations may charge a small fee for the service.

Does AutoZone still read codes for free?

Yes, AutoZone still offers free code reading and diagnostics services. They have a wide variety of tools and equipment that can help you troubleshoot your car's issue and get it running smoothly again.

Does my car have OBD or OBD2?

OBD stands for On-Board Diagnostics, and these days it’s pretty much synonymous with OBD2. OBD2 is the second generation of on-board diagnostics, and it’s what’s used in most modern cars. If your car was built after 1996, it’s probably equipped with OBD2.

How can I get my car code without a scanner?

If you need a car code and don't have a scanner, there are a few ways you can try to get it. One is to look in your car's owner's manual. Many codes are listed in the back, and some automakers also make them available online. Another way to try to get your car code is to contact your local dealership or automotive service department and ask if they can help you. Finally, there are a few websites that offer car code lookups, but you'll need your car's make, model, and year to use them.

How much does a good code reader cost?

There is no definitive answer to this question as there are a wide variety of code readers available on the market, each with its own price tag. However, as a general rule of thumb, a good code reader will likely cost anywhere from $50 to $200. Of course, the exact price will ultimately depend on the features and functionality that the code reader offers.

Is AutoZone code reader accurate?

AutoZone code reader is accurate for the most part. However, there have been a few cases where the code reader has given false readings.