Verdict overview
- worth the money 9.6
- Precision 9.6
- Simple to use 9.8
- Sheerness 9.6
- clearly written 9.8
Pros
The MS309 obd2 scanner can save you money on emissions
related repairs.
The MS309 can read and clear codes, view DTC definitions, and turn off the check engine light.
Cons
Possible short lifespan.
Tech specs
OEM Part Number | Supports CAN Controller Area Network and all other current OBD II protocols |
Screen Size | 1 Inches |
Power Source | Battery Powered |
Bulb Type | LED |
Manufacturer Part Number | MaxiScan 2022 |
Lift Type | Manual |
Product Dimensions | 4 x 2.6 x 0.8 inches |
Exterior | Brushed |
Special Features | Compatible with domestic, Asian and European vehicles, 1996 and newer, Views freeze frame data, Turns off Check Engine Light, clears codes and resets monitors, Displays DTC definitions on screen, Retrieves generic P0, P2, P3 and U0 , manufacturer specific P1, P3 and U1 , and pending codes, Displays monitor and I/M readiness status emissions , Erases Codes and turns off Check Engine Lights, Retrieves vehicle identification information VIN, CALID and CVN , Supports CAN Controller Area Network and all other current OBD II protocols |
Voltage | 12 Volts |
Model | MS309 |
Operating System | Other |
Item Dimensions LxWxH | 4 x 2.6 x 0.8 inches |
Display resolution | Backlit, 128x64 pixel display |
Item Weight | 11.3 ounces |
ABPA Partslink Number | MS1234567 |

Product Overview
I recently had the opportunity to review the Autel OBD2 Scanner MS309 and I must say it is an impressive piece of equipment. It is a handheld OBD2 code reader capable of scanning vehicle Diagnostic Trouble Codes DTCs in seconds, which can help pinpoint emission related issues.
The Autel OBD2 Scanner MS309 is relatively easy to use and has a wide range of features that make it a great choice for those who want to take control of their own car repairs. With this device, you can read and clear codes, view DTC definitions, turn off check engine light, check I/M Readiness status, retrieve freeze frame data and vehicle info, etc. Knowing the codes in advance will brace you for the cost estimate to fix at the repair shop, so you can save hundreds of dollars on diagnostics alone. The device can also be used to quickly find out why the check engine light is on and reset it, as well as retrieve I/M Readiness status to help your car ready pass the annual smog check.

The device is compatible with 99 OBDII Compliant vehicles and supports all OBD2 protocols: KWP2000, ISO2000, ISO9141, J1850 VPW, J1850 PWM and CAN. It communicates with vehicles through a standard 16 PIN OBD2 cable and it s powered by vehicle directly no battery needed. What s more is that each code is followed by its definition when you are reading codes so you can quickly locate the problem area. Lastly, it also retrieves freeze frame data including important engine parameters like RPM, fuel pressure, fuel trim, engine coolant temperature etc., as well as Vehicle Information such as VIN number, Calibration ID s , Calibration Verification Nos. CVNs , etc.
Overall this product is definitely worth considering if you are looking for an affordable yet reliable tool that can help diagnose car problems quickly and accurately. This product is great for DIYers or beginners who want to take control of their own car repairs without having to pay for costly services from mechanics or repair shops. The Autel OBD2 Scanner MS309 does come with a 12 month warranty and free lifetime technical support so you don t have to worry about any issues after purchase either!
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Compare code readers scan toolsFrequently asked questions
- What does the Autel OBD2 Scanner MS309 do?
- Is this OBD2 scanner compatible with my vehicle?
- How do I use the Autel OBD2 Scanner MS309?
- Can I use the Autel OBD2 Scanner MS309 to pass a smog check?
- Is the Autel OBD2 Scanner MS309 easy to use?
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