Autophix OM123 is a beginner’s level diagnostic code reader. It is designed with the average car owners in mind as it is very straightforward to use.
The plug-and-play code reader can quickly retrieve codes and define them on the screen.
Autophix OM123 vs. OM121 vs. OM126 comparison chart
 AUTOPHIX OM123 |  AUTOPHIX OM121 |  AUTOPHIX OM126P |
|
| Customer Rating |  4.7 / 5 |  4 / 5 |  4.5 / 5 |
| Price |  | | |
| Package Dimensions | 9.5" x 7" x 1" | 5.5" x 2.6" x 1.1" | 9" x 1.5" x 6.4" |
| Item Weight | 10.4oz | 8.8oz | 11.2oz |
| Read and Clear Codes | ✔ | ✔ | ✔ |
| Reset Check Engine Light | ✔ | ✔ | ✔ |
| Retrieve VIN, CIN, CVN | ✔ | ✔ | ✔ |
| I/M Readiness Test | ✔ | ✔ | ✔ |
| Live Data Stream | ✔ | -- | ✔ |
| View Freeeze Frame Data | ✔ | -- | ✔ |
| O2 Sensor Test | -- | -- | ✔ |
| EVAP Systems Test | -- | -- | ✔ |
| On-board Monitor Test | -- | -- | ✔ |
| Print Data to PC | -- | -- | ✔ |
| Bottom Line | Autophix OM123 is for any car owners who want to read and clear DTCs. | Autophix OM121 suits any beginners to turn off the MIL. | Autophix OM126P is for young average car owners or DIYers. |
Autophix OM123 overview
4.7 / 5Even better, the code reader has a large screen that allows you to read codes comfortably.
The screen has a resolution of 128×64 pixels, making the codes more eligible.
Besides, the LCD screen has a white background to contrast the diagnostic codes. All these modifications are designed to enhance the readability of the codes.
Autophix OM123 can accurately retrieve the I/M readiness tests. At the same, it can quickly read and clear the check engine light.
Here is an in-depth review of Autophix OM123 that features strengths and weaknesses.
Detailed review of Autophix OM123
Features and functionality
Autophix OM123 is designed with simplicity and efficiency for average car owners. Enlisted are the key features and functionality.
Clear the check engine light
Strength
Autophix OM123 can quickly connect to a vehicle onboard computer to retrieve diagnostic codes.
As a result, you will be able to effectively determine the cause of the check engine light before repairing it.
It displays the codes and subsequently defines each code on the screen, making it possible for the average car owner to determine the cause of the check engine light accurately.
Once you have established the possible cause, you can fix it if you are DIY.
On the other hand, you can have the vehicle repaired by your mechanic if you are not in a position to repair your car.
There is an advantage of scanning your car before taking it to a mechanic.
One reason is being able to know the fault and an estimated cost of repair.
As a result, you will not incur the unnecessary cost of repair.
Once the fault is fixed, Autophix OM123 can effectively help you determine if the repair is complete.
Subsequently, the code reader will turn off the check engine light.
Weakness
This code reader can only clear check engine lights on basic issues. The code reader is not designed to diagnose advanced problems.
Performs I/M readiness test
Strength
If you are concerned about passing the annual smog test, then it is advisable to scan your car before taking it for a test.
Luckily Autophix OM123 can help you ascertain the smog readiness status of your car.
The code reader can retrieve different emission diagnostic trouble codes.
First, you can retrieve diagnostic trouble codes indicating that your car is in good condition.
It means that your car will be able to pass the smog test.
Secondly, you can retrieve codes indicating that there are pending codes that should be clear first.
The good news is that you can scan the entire vehicle and clear the pending issues using this code reader.
If your car has a severe emission problem, the code reader will retrieve corresponding DTCs.
It is advisable to take the car to a mechanic or fix the emission issues yourself if you are a DIY.
Once you have fixed all the emission problems, you can turn off the MIL lights with Autophix OM123.
Weakness
This code reader does not provide an explicit I/M readiness status like the counterpart code readers that use LED display.
OBD2 code reader look up the library
Strength
Autophix OM123 is designed to really make the diagnostic process easy.
You will see that this code reader has a diagnostic trouble code lookup the library.
The library has hundreds of codes and their definitions.
Whenever you scan your car and retrieve diagnostic trouble codes that are strange, you can always look them up in the library.
This feature helps to define the code and suggests possible repair solutions.
As a result, it makes it possible for you to establish the cause of check engine light without necessarily being a mechanic.
In the long run, you will end up saving time as well as money.
Weakness
The library lookup is only limited to basic diagnostic codes.
Retrieve VIN incompatible vehicles
Are you looking to buy a used car?
If yes, then the first thing that you should consider is getting records of the used car.
One way of retrieving a reliable history of a car is by first retrieving its VIN.
Fortunately, Autophix OM123 can conveniently retrieve the VIN of a vehicle.
Once you’ve retrieved the VIN, you can do a search to determine the history of that car.
The most outstanding aspect is that it can accurately retrieve VIN incompatible vehicles.
Weakness
In most cases, the code reader may fail to establish a connection on vehicles listed as compatible.
Compatibility
The first thing that you will notice when it comes to this code reader is the broad compatibility.
Autophix OM123 is compatible with all OBD2 compliant vehicles from the US, Asia, and EU. All the OBD2 cars manufactured after 1996.
Therefore, it means that you can retrieve the code and clear the Check Engine Lights using Autophix OM123.
It is also compatible with all the OBD II protocols, including the latest CAN protocol.
Besides, it supports multiple languages with English, German, French, and Spanish included.
Pros
Cons
BONUS: AUTOPHIX OM126: OBD2 Car Code Reader / Emissions Analyzer Review
Who is it built for?
Autophix OM123 is primarily built for average car owners.
It has a large screen that makes the reading of diagnostic codes very easy.
At the same time, it has four buttons for ease of navigation and clearing codes.
Therefore, these features make this code reader ideal for average car owners who want to find a cause of Check Engine Light.
Check Price at AmazonThe bottom line
Autophix OM123 has been designed to be user-friendly. It has buttons that make navigation very easy.
At the same time, it has a large screen to enhance readability.
As a result, average car owners can comfortably perform the most basic functions using Autophix OM123.
However, it only supports a few basic functions and should be used with other diagnostic tools for a more comprehensive diagnosis.
Read more: ATDIAG AT330: OBD2 Engine Code Reader Review
I’m Tim Miller from Denver, Colorado. I’m the founder of obdadvisor.com, an automotive blog about "Auto Diagnostic Tools and Repair Guides". My fan page is facebook.com/autozikcom. I've been working as an automotive mechanic and blogger for over 10 years writing articles to share my experiences and expertise.
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