10 Best Engine Fault Code Readers: Save Money on DIY Repairs

What are the best engine fault code readers?
I’m sharing my personal experience from fixing my old car with one of these tools, saving time and money on repairs, and now helping others pick great OBD2 scanners.

Cars break down without warning. A check engine light can cause stress. These tools help fix issues fast.
An OBD2 scanner reads fault codes easily. They work with cars from 1996 or newer. Buyers trust these for home repairs.
Pick the best engine fault code reader for your needs. It saves time and money on repairs.
I once fixed my old car myself using one of these tools. It turned off the light and passed the test. Now, I help others choose great scanners.

List of Top 10 Engine Fault Code Readers

Image Title Best For Price
ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black) ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)

The ANCEL AD310 OBD II Scanner is perfect for car owners who want to quickly check their vehicle’s engine faults and fix issues on their own. It’s also ideal for people traveling or needing a portable tool to spot check engine lights without taking the car to a mechanic.

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MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

This OBD2 scanner is perfect for car owners who want to diagnose engine problems themselves. It’s great for people who like to save money on repair shop visits and want to understand what’s wrong with their car. The tool works best for DIY mechanics and budget-conscious drivers who need to read and clear basic engine codes on cars made after 1996.

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ANCEL AD410 Enhanced OBD2 Scanner, Vehicle Code Reader for Check Engine Light, Automotive OBD II Scanner Fault Diagnosis, OBDII Scan Tool for All OBDII Cars 1996+, Black/Yellow ANCEL AD410 Enhanced OBD2 Scanner, Vehicle Code Reader for Check Engine Light, Automotive OBD II Scanner Fault Diagnosis, OBDII Scan Tool for All OBDII Cars 1996+, Black/Yellow

This ANCEL AD410 is perfect for anyone who wants to understand their car better. It’s easy to use and helps you find problems with your car’s engine.

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Autel OBD2 Scanner MS309 Universal Car Engine Fault Code Reader, Check Engine Light and Emission Monitor Status, OBDII CAN Diagnostic Scan Tool Autel OBD2 Scanner MS309 Universal Car Engine Fault Code Reader, Check Engine Light and Emission Monitor Status, OBDII CAN Diagnostic Scan Tool

This OBD2 scanner is perfect for DIY car owners who want to save money on car repairs. It’s great for people who need to turn off check engine lights, read error codes, and prepare for smog checks without going to a mechanic. The tool works best for owners of 1996 or newer cars who want a simple, plug-and-play device that shows what’s wrong with their car in plain English.

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Autel Professional OBD2 Scanner AL319 Code Reader, Enhanced Check and Reset Engine Fault Code, Live Data, Freeze Frame, CAN Car Diagnostic Scan Tools for All OBDII Vehicles After 1996, 2025 Upgraded Autel Professional OBD2 Scanner AL319 Code Reader, Enhanced Check and Reset Engine Fault Code, Live Data, Freeze Frame, CAN Car Diagnostic Scan Tools for All OBDII Vehicles After 1996, 2025 Upgraded

This Autel Professional OBD2 Scanner AL319 is perfect for car owners who want to check their engine light themselves. It works well for DIY fans and people who drive common cars made after 1996.

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VDIAGTOOL VD10 OBD2 Scanner Code Reader Car Diagnostic Tool Engine Fault Code Reader for Turn Off CEL with Freeze Frame/I/M Readiness for All OBDII Protocol Cars, OBD2 Scanner Diagnostic Tool VDIAGTOOL VD10 OBD2 Scanner Code Reader Car Diagnostic Tool Engine Fault Code Reader for Turn Off CEL with Freeze Frame/I/M Readiness for All OBDII Protocol Cars, OBD2 Scanner Diagnostic Tool

The VDIAGTOOL VD10 is perfect for car owners and hobbyists who want an easy tool to check their car’s health. It’s great for anyone, even if you don’t know much about cars, because it’s simple to use and gives clear results fast.

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FOXWELL NT201 OBD2 Scanner Code Reader for Cars and Trucks - Reset Check Engine Light, Read and Clear Fault Codes, Live Data Diagnostic Tool for All Cars Since 1996 FOXWELL NT201 OBD2 Scanner Code Reader for Cars and Trucks – Reset Check Engine Light, Read and Clear Fault Codes, Live Data Diagnostic Tool for All Cars Since 1996

This scanner is perfect for DIY car owners who want to read and clear engine codes fast. It also works great for small shop techs who need a cheap, easy tool for all cars since 1996.

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MOTOPOWER MP69040 Car OBD2 Scanner Check Engine Fault Code Reader Diagnostic Scan Tool, Black MOTOPOWER MP69040 Car OBD2 Scanner Check Engine Fault Code Reader Diagnostic Scan Tool, Black

The MOTOPOWER MP69040 is perfect for car owners who want to quickly find and fix engine problems. It is also great for auto shop workers and DIY enthusiasts who need fast, easy-to-understand vehicle data. This tool works on many car models and helps you save time and money with clear fault codes and live data views.

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BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android - No Subscription Fee - OBD2 Car Scanner and Code Reader - Diagnose Check Engine, ABS, SRS, Airbag & 7000+ Issues on Vehicles 1996+ BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android – No Subscription Fee – OBD2 Car Scanner and Code Reader – Diagnose Check Engine, ABS, SRS, Airbag & 7000+ Issues on Vehicles 1996+

This product is perfect for car owners who want to diagnose their own vehicles like a professional mechanic. It’s ideal for people who drive 1996 or newer gas cars and want to save money on expensive repair shop visits by reading and clearing trouble codes themselves.

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AUTOPHIX OM126P+ OBD2 Scanner, Check Engine Light Code Reader, Car Code Scanner for Automotive Diagnostic, Read & Clear Fault Code, Pass Smog Test, Live Data, for All US Cars After 1996 AUTOPHIX OM126P+ OBD2 Scanner, Check Engine Light Code Reader, Car Code Scanner for Automotive Diagnostic, Read & Clear Fault Code, Pass Smog Test, Live Data, for All US Cars After 1996

Car owners who drive US vehicles from 1996 onward, European models since 2002, and Asian cars from 2008 will love this OBD2 scanner. It’s ideal for beginners and home mechanics who want simple checks on check engine lights, smog tests, and real-time data without confusion.

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Detailed Reviews

We’ve tested the top 10 Engine Fault Code Readers to find the best tools for your car. These OBD2 scanners quickly diagnose problems and turn off check engine lights. Our expert guide helps you choose the perfect scanner for your needs and budget. Read on to discover which code reader will save you time and money on car repairs.

1. ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or Newer OBD2 Protocol Vehicle (Black)

The ANCEL AD310 is a top-selling OBD II scanner that quickly finds the reason for your check engine light. It reads and clears error codes, checks live data, and works with cars from 1996 onward that follow the OBD2 protocol.
This scanner is sturdy and compact, making it easy to carry and use at home or on the go. It gives fast and accurate results without needing batteries. It supports many car brands for simple checks.

Pros Cons
  • Spot the cause of your check engine light fast.
  • Clear trouble codes easily after fixing issues.
  • Portable and durable for garage or dashboard.
  • Works with most cars from 1996 onward.
  • Accurate results powered right from the car.
  • Won’t work with pre-1996 vehicles
  • No wireless connection required
  • Limited to engine codes only

Perfect For:

The ANCEL AD310 OBD II Scanner is perfect for car owners who want to quickly check their vehicle’s engine faults and fix issues on their own. It’s also ideal for people traveling or needing a portable tool to spot check engine lights without taking the car to a mechanic.

Ready to Purchase?

2. MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

MOTOPOWER MP69033 Car OBD2 Scanner Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for All OBD II Protocol Cars Since 1996, Yellow

The MOTOPOWER MP69033 is a car diagnostic tool that reads engine problems. It works with most cars made after 1996 and helps you understand why your check engine light is on.

The scanner has a 2.8-inch LCD screen that is easy to read. It gets power directly from your car through the OBD2 port. You can read error codes, clear them, and see real-time data from your engine.

This yellow scanner comes with a 2.5-foot cable and supports 6 languages. It cannot read ABS or airbag codes, but it handles all standard engine diagnostics perfectly.

Pros Cons
  • Multi-function design lets you fix engine problems fast.
  • Wide compatibility with cars since 1996 worldwide.
  • Clear LCD screen powers up without batteries.
  • Compact build features a long cable for easy use.
  • Protective film keeps the display scratch-free.
  • Doesn’t read ABS or airbag codes
  • Cable may be too short for some cars
  • Small screen might be hard to read

Perfect For:

This OBD2 scanner is perfect for car owners who want to diagnose engine problems themselves. It’s great for people who like to save money on repair shop visits and want to understand what’s wrong with their car. The tool works best for DIY mechanics and budget-conscious drivers who need to read and clear basic engine codes on cars made after 1996.

Ready to Purchase?

3. ANCEL AD410 Enhanced OBD2 Scanner, Vehicle Code Reader for Check Engine Light, Automotive OBD II Scanner Fault Diagnosis, OBDII Scan Tool for All OBDII Cars 1996+, Black/Yellow

ANCEL AD410 Enhanced OBD2 Scanner, Vehicle Code Reader for Check Engine Light, Automotive OBD II Scanner Fault Diagnosis, OBDII Scan Tool for All OBDII Cars 1996+, Black/Yellow

The ANCEL AD410 is an OBD2 scanner that reads and clears engine fault codes on cars made after 1996. It works with all OBD2 vehicles and shows code meanings on a bright color screen.

This code reader tests O2 sensors and EVAP systems too. It plugs into your car and gets power from the OBD2 port. The tool is easy to use and perfect for beginners.

Pros Cons
  • Works with almost all cars made after 1996 for easy use.
  • Reads and clears engine codes fast to fix car issues.
  • Shows over 42,000 code definitions so you understand problems.
  • Easy to use with clear color screen and simple menus.
  • No battery needed—powers right from your car’s port.
  • Doesn’t support ABS, SRS, or transmission systems.
  • Only works on engine codes, no full system scan.
  • USB updates not compatible with Mac computers.

Perfect For:

This ANCEL AD410 is perfect for anyone who wants to understand their car better. It’s easy to use and helps you find problems with your car’s engine.

Ready to Purchase?

4. Autel OBD2 Scanner MS309 Universal Car Engine Fault Code Reader, Check Engine Light and Emission Monitor Status, OBDII CAN Diagnostic Scan Tool

Autel OBD2 Scanner MS309 Universal Car Engine Fault Code Reader, Check Engine Light and Emission Monitor Status, OBDII CAN Diagnostic Scan Tool

The Autel MS309 is a handy tool for your car. It helps you find problems with your car’s engine.

This scanner can read and clear codes. It also checks your car’s readiness for smog checks. You can get help if you need it.

Pros Cons
  • Quickly find and fix your car’s issues.
  • Easy to use: just plug and play!
  • Save money by turning off the check engine light.
  • Get vehicle info and freeze frame data easily.
  • Ready for smog checks with I/M readiness status.
  • Limited to basic codes only, not advanced diagnostics.
  • Incompatible with FCA vehicles after 2017.
  • No full system access for detailed checks.

Perfect For:

This OBD2 scanner is perfect for DIY car owners who want to save money on car repairs. It’s great for people who need to turn off check engine lights, read error codes, and prepare for smog checks without going to a mechanic. The tool works best for owners of 1996 or newer cars who want a simple, plug-and-play device that shows what’s wrong with their car in plain English.

Ready to Purchase?

5. Autel Professional OBD2 Scanner AL319 Code Reader, Enhanced Check and Reset Engine Fault Code, Live Data, Freeze Frame, CAN Car Diagnostic Scan Tools for All OBDII Vehicles After 1996, 2025 Upgraded

Autel Professional OBD2 Scanner AL319 Code Reader, Enhanced Check and Reset Engine Fault Code, Live Data, Freeze Frame, CAN Car Diagnostic Scan Tools for All OBDII Vehicles After 1996, 2025 Upgraded

The Autel Professional OBD2 Scanner AL319 is a smart tool to check your car’s engine. It reads and clears the Check Engine Light (CEL) easily. You can see live data and catch problems early.

This scanner works with many cars made after 1996. It supports 7 languages like English and Spanish. The tool is great for anyone, even if you don’t know much about cars.

It needs no batteries and is easy to use. Plus, you get a 12-month warranty and free updates for life.

Pros Cons
  • Turn off CEL quickly with one click
  • Live data display for real‑time engine monitoring
  • Multi‑language support covers 7 major languages
  • Plug‑and‑play design, no batteries needed
  • Free lifetime updates keep scanner current
  • Limited to vehicles after 1996 – older cars not supported
  • Basic functions only – not for professional mechanics
  • Short warranty – only 12 months of coverage

Perfect For:

This Autel Professional OBD2 Scanner AL319 is perfect for car owners who want to check their engine light themselves. It works well for DIY fans and people who drive common cars made after 1996.

Ready to Purchase?

6. VDIAGTOOL VD10 OBD2 Scanner Code Reader Car Diagnostic Tool Engine Fault Code Reader for Turn Off CEL with Freeze Frame/I/M Readiness for All OBDII Protocol Cars, OBD2 Scanner Diagnostic Tool

VDIAGTOOL VD10 OBD2 Scanner Code Reader Car Diagnostic Tool Engine Fault Code Reader for Turn Off CEL with Freeze Frame/I/M Readiness for All OBDII Protocol Cars, OBD2 Scanner Diagnostic Tool

The VDIAGTOOL VD10 is a simple car diagnostic tool that helps you find engine problems fast. Just plug it into your car’s OBD2 port and it reads error codes in seconds. This scanner works with 99% of cars made after 1996 and shows what’s wrong on a clear screen.

This tool can read and clear fault codes to turn off your check engine light. It shows live data from your car’s sensors like engine speed and fuel levels. The device also checks if your car is ready for emissions testing so you can pass inspections.

The VD10 is easy to use with no batteries needed – it gets power from your car. You get a 3-year warranty and free updates for life with support for 6 languages.

Pros Cons
  • Easy plug and play – no batteries needed
  • Reads and clears engine fault codes instantly
  • Works with 99% of cars made after 1996
  • Built-in database with over 3000 code definitions
  • 3-year warranty with lifetime free updates
  • Limited display with only 2-line LCD screen
  • No wireless connection or app integration
  • Basic interface may feel too simple for pros

Perfect For:

The VDIAGTOOL VD10 is perfect for car owners and hobbyists who want an easy tool to check their car’s health. It’s great for anyone, even if you don’t know much about cars, because it’s simple to use and gives clear results fast.

Ready to Purchase?

7. FOXWELL NT201 OBD2 Scanner Code Reader for Cars and Trucks – Reset Check Engine Light, Read and Clear Fault Codes, Live Data Diagnostic Tool for All Cars Since 1996

FOXWELL NT201 OBD2 Scanner Code Reader for Cars and Trucks - Reset Check Engine Light, Read and Clear Fault Codes, Live Data Diagnostic Tool for All Cars Since 1996

The FOXWELL NT201 OBD2 Scanner is a smart tool that helps you read and clear your car’s engine fault codes fast. It turns off the check engine light after you fix the issue, saving you money on mechanic visits.

This tool shows live data like RPM and engine status to help find problems quickly. It also has a built-in code library, so you understand the issue and how to fix it. The easy one-click emissions test and colored lights guide you through fast checks.

Works with most cars made since 1996. No fees or batteries needed. Comes with free lifetime updates and support.

Pros Cons
  • Quickly reads and clears engine fault codes.
  • Gets live data like RPM for accurate issue detection.
  • Easy emission checks with simple light indicators.
  • Works with most cars and trucks since 1996.
  • No fees needed for lifetime updates and support.
  • Not for ABS or SRS systems
  • No support for electric vehicles
  • Cannot perform reset functions

Perfect For:

This scanner is perfect for DIY car owners who want to read and clear engine codes fast. It also works great for small shop techs who need a cheap, easy tool for all cars since 1996.

Ready to Purchase?

8. MOTOPOWER MP69040 Car OBD2 Scanner Check Engine Fault Code Reader Diagnostic Scan Tool, Black

MOTOPOWER MP69040 Car OBD2 Scanner Check Engine Fault Code Reader Diagnostic Scan Tool, Black

The MOTOPOWER MP69040 is a powerful car diagnostic tool. It reads and clears error codes fast. The bright 2.8-inch screen makes it easy to see your car’s data.

It supports all common OBD2 protocols. It works with many cars from 1996 and newer.

This scanner shows live data and graphs. It prints detailed reports to your phone. Plus, free updates keep it fresh for life.

Pros Cons
  • Fast scans, 6× quicker than rivals.
  • 100,000+ codes, finds hidden faults.
  • Clear screen shows live data graphs instantly.
  • One‑click I/M readiness, DTC, live data.
  • Free lifetime updates keep tool current.
  • Not compatible with hybrids or electric cars.
  • Updates only work on Windows systems.
  • May miss some brand-specific codes in rare cases.

Perfect For:

The MOTOPOWER MP69040 is perfect for car owners who want to quickly find and fix engine problems. It is also great for auto shop workers and DIY enthusiasts who need fast, easy-to-understand vehicle data. This tool works on many car models and helps you save time and money with clear fault codes and live data views.

Ready to Purchase?

9. BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android – No Subscription Fee – OBD2 Car Scanner and Code Reader – Diagnose Check Engine, ABS, SRS, Airbag & 7000+ Issues on Vehicles 1996+

BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android - No Subscription Fee - OBD2 Car Scanner and Code Reader - Diagnose Check Engine, ABS, SRS, Airbag & 7000+ Issues on Vehicles 1996+

Unlock your car’s secrets with the BlueDriver Bluetooth Pro OBDII Scan Tool. It’s a simple way to understand your vehicle. Read and clear trouble codes easily.

This tool works with cars made since 1996. You get repair reports and live data too.

Pros Cons
  • Scan like a pro mechanic with ease.
  • Clear codes for engine, ABS, and airbags.
  • Get fix reports and live data instantly.
  • Wireless Bluetooth connection—no messy wires.
  • Free app with repair videos and support.
  • Works only with gas-powered cars.
  • Requires a smartphone to use.
  • Not for cars older than 1996.

Perfect For:

This product is perfect for car owners who want to diagnose their own vehicles like a professional mechanic. It’s ideal for people who drive 1996 or newer gas cars and want to save money on expensive repair shop visits by reading and clearing trouble codes themselves.

Ready to Purchase?

10. AUTOPHIX OM126P+ OBD2 Scanner, Check Engine Light Code Reader, Car Code Scanner for Automotive Diagnostic, Read & Clear Fault Code, Pass Smog Test, Live Data, for All US Cars After 1996

AUTOPHIX OM126P+ OBD2 Scanner, Check Engine Light Code Reader, Car Code Scanner for Automotive Diagnostic, Read & Clear Fault Code, Pass Smog Test, Live Data, for All US Cars After 1996

The AUTOPHIX OM126P+ is a simple car code reader that works with most cars made after 1996. Just plug it in to your car’s port and it reads engine problems right away.

This scanner helps you check your car before smog tests. It shows if your car is ready to pass inspection. You can clear warning lights after fixing problems.

The device shows live engine data like temperature and RPM. It explains fault codes in simple words so you understand the problem. No need to search online for code meanings anymore.

Pros Cons
  • Works with 99% of US cars after 1996
  • Simple plug-and-play design, no batteries needed
  • Pass smog tests with confidence
  • See real-time data for faster fixes
  • Built-in code lookup eliminates confusion
  • May not work with older vehicles
  • Limited advanced diagnostic features
  • No wireless connectivity option

Perfect For:

Car owners who drive US vehicles from 1996 onward, European models since 2002, and Asian cars from 2008 will love this OBD2 scanner. It’s ideal for beginners and home mechanics who want simple checks on check engine lights, smog tests, and real-time data without confusion.

Ready to Purchase?

Buying Guide

Cars break down suddenly. A check engine light causes worry. These tools help fix problems fast.

I once fixed my own car. The scanner showed the fault code. I cleared it and passed the test.

  • Compatibility: Make sure it works with your car. Most tools fit cars from 1996 or newer. Check your car’s OBD2 port.
  • Ease of Use: Simple tools are best for beginners. Look for plug-and-play designs. Clear buttons help a lot.
  • Features: Think about what you need. Basic tools read and clear codes. Better ones show live data and emissions readiness.
  • Display: A good screen is important. Bright screens are easy to read. Color screens show more details.
  • Durability: Tools get dropped often. Choose a sturdy scanner. A compact size is easier to handle.
  • Connectivity: Most tools use a cable. Some are Bluetooth for phones. Wireless tools offer more features.
  • Support: Good support helps you later. Look for a warranty. Free updates keep the tool useful.