Autel MS300 OBD2 Scanner Code Reader, Turn Off Check Engine Light, Read & Erase Fault Codes, Check Emission Monitor Status CAN Diagnostic Scan Tool
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Extended holiday returns
Returnable until Jan 31, 2026 Learn more
Returnable until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Tuesday, Dec 2
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Features
- For Car DIYers And BeginnersThis plug-and-play Autel scanner MS300 can pay for itself in the first use. It communicates with vehicles through standard 16-PIN OBD2 cable and its powered by vehicle directly (no battery needed). It capable of scanning vehicle Diagnostic Trouble Codes (DTCs) in seconds to pinpoint emission-related issues. The little guy should be a member of your toolbox, always in your car and ready to be taken out and used.
- Read Codes & Clear Codes In SecondsGetting diagnostic codes(DTCs) should be the start of all repairs if you don't want to be ripped off. You can use MS300 to read the codes in seconds and look them up to quickly locate the problem areas, then determine if you can do the repair yourself or go to a mechanic, and clear the codes to get everything back to normal.
- Turn Off Check Engine LightThe check engine light is always annoying you, most of the time because of a little thing, isn't it? Maybe it's just a gas cap that's not tightened but you paid hundreds of dollars for it? With Autel MS300 scan tool, you can read code to quickly find out why the check engine light is on and reset it.
- Help You Pass Annual Smog CheckTo pass annual smog check, you are better to make the OBD II Readiness Monitors on your car Ready. You dont want to pay for a failed smoke check. MS300 OBD2 scanner can retrieve I/M Readiness status to check the monitors like misfire, fuel system, catalyst, O2 sensors, EVAP, etc, to help your car ready pass the annual smog check.
- Works On 99% Vehicles & No-Worry PurchaseAutel MaxiScan MS300 car code reader supports all OBD2 protocols: KWP2000, ISO2000, ISO9141, J1850 VPW, J1850 PWM and CAN. It is compatible with 99% OBDII-Compliant vehicles, passenger cars or light trucks. For OBD2 cars, usually, post 1996 for US market, post 2006 for EU market and post 2009 for Asian market. It comes with a 12-month warranty and free lifetime technical support. If you need any technical support, please feel free to contact us.
Description
Retrieve generic and manufacturer specific Diagnostic Trouble Codes (DTC), includes definitions lookup software on CD and displays DTC definitions on screen.
Brand: Autel
Product Dimensions: 2.9"L x 0.83"W x 4.4"H
Operating System: Linux
Automotive Fit Type: Vehicle Specific Fit
UPC: See more
Brand: Autel
Product Dimensions: 2.9"L x 0.83"W x 4.4"H
Operating System: Linux
Automotive Fit Type: Vehicle Specific Fit
UPC: 799648127742 062542116274 602125438081 724190794388 614529968071 701234291645 889743012729 521081874729 743653982711 709466111571 713463318208 713741390759 889957143271 713524943646 889743012736 738614684001 635873822970 700220620421 808890284735 545247983070 712407252325 521081053926 066489981636 759972712595 848454030453 651046547044 610696975300 702383222771 700220621336 620366601217 840404176624 054678483740 710185407692 702563709221 701392163020 888309288455 077344079719 610660873281 613869540541 799648153963 799648153208 889743012798 611165626082 891638731066 707273302236 755263547525 891638735545 193195983460 193195983484 719975458746 712407252004 889743012842 645602589739 608442866859 889577350356
Global Trade Identification Number: 38
Manufacturer: MaxiScan
Model: US-MaxiScan MS300
Item Weight: 7.8 ounces
Item model number: MS300
Batteries: Lithium Polymer batteries required.
Is Discontinued By Manufacturer: No
Manufacturer Part Number: MS300
Voltage: 12 Volts
Date First Available: November 18, 2008
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Dec 2
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
A Must-Have Tool That Pays for Itself After One Use The Autel MS300 OBD2 Scanner has been one of the smartest twenty-dollar tools I’ve ever bought for my garage. It’s small, rugged, and ridiculously easy to use—just plug it into your car’s OBD2 port, turn the ignition to ON, and it immediately pulls diagnostic codes. Within seconds, you can see exactly why your check engine light is on, look up the code online, and decide whether it’s a DIY fix or something worth taking to a mechanic. What I like most is its simplicity. There are only two buttons: one for “Enter” and one to scroll through options. It reads and clears codes, checks emission readiness (for smog tests), and even displays VINs on newer cars. It works on nearly all vehicles made after 1996, including domestic, European, and Asian models. I’ve used it on several cars—from a Mitsubishi Raider to a Toyota Highlander—and it’s never failed to connect. The screen is basic but readable, even in a dim garage. The cable is sturdy, and the unit powers directly from the car, so there are no batteries to worry about. It won’t show live data or deep system diagnostics like an expensive scanner, but for everyday use—checking, confirming, and clearing codes—it’s perfect. Bottom line: if you drive any car made in the last 25 years, the Autel MS300 is a must-have. It’s fast, accurate, and pays for itself the first time you avoid a $100 diagnostic fee at the shop.
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Reviewed in the United States on October 20, 2025 by Rich Reviews
As with anyone who has had the check engine light pop on while driving, my heart jumped to my throat when that baby lit up my dash on the way to work. And then it splashed back down to the pit of my stomach...hard! I guess it is the not knowing of what is hurting my little commuter. I wanted to know. This brought on the search for a dependable, but not expensive, scan tool to find out on my own what the heck was going on. I found this little jem and decided to give it a shot based on the mostly positive reviews it had. NO REGRETS! This product worked without any glitches. My vehicle is a 2003 Hyundai Elantra GLS and I think the hardest part of the process is finding the link connector in the car (it is down below of the steering wheel under the driver side dash, if anyone is interested, you have to feel for it because it is not visible). Once I found it though, it was all down hill...in a good way. It fit perfectly and worked as stated in the manual. Just follow the steps indicated and you will get the info you need. In my case, all I was looking for was the reason for the check engine light to turn on. I got my answer with this little scan tool. In less than five minutes I got the DTC code (this is explained in the manual) that set of the MIL. Once I got the code, I went straight to the auto shop and told my mechanic what I found. I have a good honest "guy" that was surprised, but also pleased, that I had pin pointed the problem for him. But, the tool also gives more info on the car than just the problem codes. It can pretty much give you the status of most of important components in the car. It was a relief to find out my car was in great shape, except for just one code. Very much a relief. Well, from my positive rating, you can figure out that I definitely recommend this producted. It is a simple, but valuable tool to have if you drive every day and depend on your car. I have used it only once, and will be happy if I don't have to use it again. I mean this in a good way, but if I ever get a check engine light, it won't freak me out because I have my own diagnostic tool to see what is going on with my beloved 4-banger! Note: The manual comes with a list of generic code definitions. Once you find the code, you can use their listing, or look it up on the internet. I did both just to verify.
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Reviewed in the United States on September 28, 2011 by arijeff945
for those with link error, I didn't read the manual but you need the ignition in the ON position (not ACC or OFF). For those with codes that it read that had already been repaired... your mechanic should have cleared the codes in the computer after the repair but did not. Now you can clear them yourself. :) It's possible the repair didn't work, either, but if the MIL (malfunction indicator lamp, aka check engine light etc) didn't come back on, you should be fine. ----------------------------- This Autel scans my 1998 Subaru Legacy and read the P0440 code just the same as the Actron. It cleared the code successfully and the MIL turned off. This unit also scans my wife's 2010 Toyota RAV4, but it doesn't have any check engine light to confirm codes or any of that stuff. The included manual comes with generic DTC definitions, but the definitions are so short you need to search them on the web anyway to translate and determine the severity. That's true with just about any scanner, especially those in this price range so I was expecting that. The manual does not list manufacturer specific codes that the tool presumably reports, but you can get those on the web. I've found that obd-codes dot com to be a good resource for _most_ DTC generic and manufacturer specific definitions. It also includes other details for generic codes that are helpful. It is true that most auto parts stores will scan your car for free, but that's not always convenient. Plus, if you have an intermittent problem that occassionally trips the MIL, you might dismiss any future instance of the MIL as the original issue, and potentially cause harm to your vehicle. If you own a scanner, it's easy to regularly verify. I also own a more expensive Actron CP9180 but I bought the Autel to leave in my car at all times. Since MS300 so inexpensive I wouldn't be too upset if it gets baked in the summer heat. This product feels like a toy (very light and it has a short short cord...maybe 18"), but it seems to work. I only gave it 4 stars because of the feel of the product, but quite honestly I wasn't expecting anything more based on the price and the fact that these are made in china. My Actron has a lot of features that I'll never use (I'm just a consumer, not a mechanic), but it is a solid product that will presumably last much longer than the cheaply made MS300. Even though I paid a cheaper price for the Actron on eBay, you can get three MS300 tools for the same price of the Actron, and the MS300 tool has every feature that normal consumers like myself need.
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Reviewed in the United States on August 17, 2010 by CG
Gets the job done and it erased codes
Reviewed in the United States on November 7, 2025 by Lady Love