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AUTOPHIX OM121: Universal Check Engine OBD2 Code Reader Review

Here's where you can get an in-depth review of the Autophix OM121
If you’re looking for an in-depth review of the Autophix OM121, this is the right place

Autophix OM121 is an excellent entry-level diagnostic tool. It offers you the opportunity to diagnose the check engine light quickly.

Autophix OM121 Vs. OM123 Vs. OM126 Comparison Chart

Autophix OM121
Check Price
Check Price
Autophix OM126
Check Price
Customer Rating
44 / 5
4.74.7 / 5
4.44.4 / 5
PriceAutophix OM121 priceAUTOPHIX OM123 priceAutophix OM126 price
Product Dimensions5.5" x 2.6" x 1.1"9.5" x 7" x 1"
Item Weight8.8oz10.4oz
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 LineAutophix OM121 suits any beginners to turn off the MIL.Autophix OM123 is for any car owners who want to read and clear DTCs.Autophix OM126 is for young average car owners or DIYers.

Autophix OM121 Overview

autophix om121 review
AUTOPHIX Auto Code Reader OM121 Universal OBDII
44 / 5
If you want to quickly diagnose the cause of Check Engine Light then Autophix OM121 is a preferred code reader.

The best part is that it is compatible with both foreign and domestic cars that are post-1996. Besides, Autophix OM121 is also compatible with the US, ASIAN, and EU built vehicles. At the same time, you can retrieve the I/M readiness test and read and clear ABS using this code reader. And the most outstanding feature about this code reader is that it reads pending and historic codes. It also defines the codes on the screen.

Detailed Review of Autophix OM121

For more information on Autophix OM121, read this review based on firsthand information.

Features And Functionality Of Autophix OM121

Read And Check Engine Light

If you want to quickly diagnose the cause of Check Engine Light, then Autophix OM121 is a preferred code reader. The code reader is designed to establish a quick connection with the vehicle’s on-board computer. As a result, the Diagnostic Trouble Codes (DTCS) are quickly displayed on the screen. Besides, you will be able to retrieve DTCs on foreign and domestic cars manufactured after 1996. Its compatibility extends to SUVs, light trucks, and hybrid vehicles.

The advantage of being able to retrieve DTCs quickly helps you to save time and money.

This is because you will reduce the number of trips to your mechanic. At the same time, if you are a DIYer, you can fix the faults and clear the Check Engine Lights without incurring any cost. And when you are not able to fix the fault, you will not be overcharged by your mechanic. The reason is that you already know the cause of the Check Engine Light.

Read And Erase ABS Codes

Being able to retrieve the VIN of any vehicle accurately is an important procedure. This is because the VIN can help you track the history of a car.

The good news is that Autophix OM121 can accurately retrieve VINs on models built in the US, EU, and Asian.

Retrieving VIN is particularly important if you want to buy a used car. You can be able to tell the mileage as well as the exchange of ownership.

Check Emission Status

Autophix OM121 can help you establish the emission status of your car at a glance. This is because the code reader can retrieve the I/M readiness status of your car. You will be able to retrieve codes that indicate that your vehicle is in good condition. It means that your car is ready for a smog test. At the same time, you will be able to get codes indicating that there are minor unresolved issues. You can use the Autophix OM121 to perform a complete scan to check and clear the codes responsible for these unresolved issues.

Once you have cleared the faults, then your car has a higher chance of passing the emission status.

On the other hand, you can retrieve codes indicating serious emission status. When you retrieve codes for serious emission status, your car will not pass the smog test. Therefore, it is recommended that you take your vehicle to a mechanic for a compressive check on the fuel system.

Defines The Diagnostic Trouble Codes

Autophix OM121 is capable of retrieving diagnostic codes and subsequently defines the codes. Definition of diagnostic trouble codes is an important feature for any average car owners and DIYers.

This is because you will understand each code’s meaning without necessarily having a background in automotive know-how.

It implies that you will be able to determine what is causing Check Engine light accurately.


Autophix OM121 is compatible with both foreign and domestic vehicles manufactured from 1996. Besides, you will be able to scan Asian, EU, and US vehicles.

BONUS: Autophix OM123: Check Engine Fault OBD2/CAN Code Reader Review

For Whom Is It Built?

Autophix OM121 is primarily built for average car owners and DIYers. Its simplicity and ease of use allow car owners to read and retrieve codes. Besides, it has a screen that allows you to access the retrieved codes easily. As a result, you will be able to retrieve diagnostic codes really quickly.

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The Bottom Line

Currently, there are numerous code readers in the market today. However, obtaining an accurate code reader that can retrieve accurate information may not be easy. Luckily, Autophix OM121 can retrieve codes accurately and quickly. Besides, it is compatible with a wide range of vehicles. It can read check engine lights in foreign and domestic cars. Autophix OM121 is a code reader that you can comfortably recommend to any average car owner.

A video about Autophix OM121

Tim MillerFounderOBD Advisor

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.

Web: https://www.obdadvisor.comEmail: [email protected]
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