If you run into OBD "not ready" condition (like we did on our 2004 Toyota Camry), this Google vlog is helpful: http://obdnotready.blogspot.com/

can it reset engine light

Would not reset check engine light on my 1998 Toyota Camry "Erase Failed!" error code. Scanned code correctly.

does it work on a 2001 dodge ram

Yes. Will work on all vehicles sold in the U.S. since 1996. All of these vehicles have a female plug, usually underneath the steering wheel. Just plug scanner in this plug, turn ignition to ON, turn on scanner, read codes, read manual. Great for erasing the check engine light if code shows no mechanical problem. I have two of them, because one seems to be on loan all of the time. Still worth the investment.

I have an airbag warning indication... is the MS300 applicable to airbag diagnostics? Thanx!

You need OBDII WITH SRS to see airbag codes. Airbag codes are not part of the OBDII requirement so it is an additional module and those scanners cost more. (you can add ABS and Transmission codes to the list of modules you may have to add) You wont find any handhelds that do all that for $20.

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

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

Product ID: 278882761

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Details

Brand
Autel
Power source
Powered by car
Product dimensions
7.4L x 2.1W x
Operating system
Android 4.4
Screen size
2.4

⚡No batteries needed, powered by vehicle

📊Supports OBD2/CAN protocols

🔧7000+ DTC codes cataloged

Description

🔍 Decode your car’s secrets like a pro—before your mechanic even knows! 🚗

SAVE TIME MONEY - Diagnose before you repair and verify fixes instantly to avoid costly guesswork.
INSTANT ENGINE INSIGHT - Read and erase generic & manufacturer-specific fault codes with ease.
PLUG PLAY SIMPLICITY - Two-button design means zero tech headaches—just plug in and diagnose.
UNIVERSAL COMPATIBILITY - Works seamlessly with 1996+ domestic, Asian, and European OBD2 vehicles.
EFFORTLESS CHECK ENGINE LIGHT RESET - Turn off that annoying MIL light in seconds—no mechanic needed.

The Autel MS300 OBD2 Scanner is a compact, vehicle-powered diagnostic tool that reads and erases over 7000 generic and manufacturer-specific trouble codes. Compatible with most 1996 and newer OBD2 vehicles, it features a simple two-button interface, no battery requirement, and supports CAN protocols, enabling quick check engine light resets and emission monitor status checks to save you time and repair costs.

Specifications

Manufacturer	MaxiScan
Brand	Autel
Model	Autel MaxiScan MS300
Product Dimensions	16 x 5 x 23 cm; 220 g
Batteries	Lithium Polymer batteries required.
Item model number	MS300
Manufacturer Part Number	MS300
Special Features	Autel MaxiScan MS300 supports: EOBD/CAN/OBD2 protocals, Turn off check engine light(MIL), Read/Erase codes(DTCs), Reset OBD2 monitor status, Retrieve I/M Readiness Status, View VIN (Vehicle Identification Number), Rescan Data, Powered by vehicle, (Wired)No batteries required, 16 PIN, Compatible with domestic, Asian and European vehicles, 1996 and newer ; Cars compatible with OBDII protocol,such as Mazda,Kia,Honda,Toyota,Nissan,Scion, Subaru,Hyundai,Honda,Acura,Infiniti, Mitsubishi,Isuzu,Daihatsu,Mahindra, Toyota,Hyundai,Lexus,Scion,Kia,Proton, Perodua,Abarth,Alfa,Bmw,Porsche,Benz, Audi,Mini,Peugeot,VW,Fiat,Lexus,Renault, LandRover,Skoda, Volvo,Seat,Sprinter, Jaguar,Lancia,Smart, Sprinter,Sprinter, Citroen,Dodge,Ford,Jeep,Chrysler,GM,Opel., Follow the correct order: Engine off >> Plug in the scanner >> Turn ignition on
Voltage	12 Volts
Item Weight	220 g

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