If you want to find out why the check engine light is on or perform basic diagnoses such as the O2 sensor or EVAP test, you do not need the top-of-the-line code readers. Launch CReader 3001 is an affordable scanner that can help you to perform basic diagnostic functions.
But,
Never buy it before you look at the comparison chart below between Launch 3001 and its competitors.
Launch 3001 vs Launch 4001 vs Launch 6001 Comparison Chart
 LAUNCH X431 Creader 3001 |  Launch Creader 4001 |  Launch FBA_Creader 6001 |
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| Customer Rating |  |  |  |
| Price |  | | |
| Product Dimensions | 9.4" x 5.5" x 1.4" | 4.7" x 0.8" x 3" | 11.7" x 11.7" x 1.7" |
| Item Weight | 8oz | 7oz | 11.2oz |
| Pros | Look-up library makes diagnosis easy and fun; Has a 2-year warranty; It is plug-and-play thus no stress of charging the battery before use; The LCD display helps to enhance the readability of the DTC codes. | Can read and clear DTCs; Performs I/M Readiness Test; Shows live data stream; Can turn off (MIL). | An affordable OBS2 scan tool that adequately performs all the advertised functions; Free Internet updates; Can work on 12V diesel engine cars; Live data. |
| Cons | Not retrieve I/M readiness status at times; Fails to retrieve VIN in some vehicles. | Almost none. | No Battery; No wireless connection. |
| Bottom Line | Launch CReader 3001 is primarily built for car owners who want to perform basic diagnosis on their cars. | Launch Creader 4001 is built for car owners who want to turn off CEL and perform some simple test on their cars. | Launch Creader 6001 is for small-scale users like beginners, DIYers, and car enthusiasts who have a key interest in the workings of a motor vehicle’s computer. |
Launch CReader 3001 Overview
This scanner has an in-built Diagnostic Trouble Code (DTC) lookup library, which means that the scan tool retrieves codes and defines them on the screen. This library will save you the trouble of having to go online to look for the meaning of diagnostic trouble code.
To find out more, read this honest review of Launch CReader 3001, featuring its strengths and weaknesses.
Detailed Review of Launch CReader 3001
Features and Functionality
1. O2 sensor test
Strength:
If you realize a drastic drop in fuel mileage, you need to check the O2 sensor.
A properly working O2 sensor analyzes the amount of oxygen available in a car’s exhaust stream. The information is turned into a useful voltage signal used to control the fuel ratio and emission.
A defective sensor transmits erroneous voltage signals to vehicles onboard computers. As a result, the car will consume more fuel and emit fumes that pollute the air. Other signs that may point to a bad oxygen sensor include rough idling, engine stalling, and weak acceleration. Besides, you can detect a strong smell and Malfunction Lights being subsequently turned on.
The good news is that Launch CReader 3001 will tell when there is a problem with the O2 sensor. If you are DIY, you can replace the O2 sensor if it is defective.
Replacing a defective O2 sensor can prevent possible damage to the catalytic converter. Catalytic converters cost thousands of dollars to replace.
Weakness:
The code reader takes a long time to retrieve the O2 sensor codes.
You may end up disconnecting the code reader, thinking that it’s stopped functioning.
Also, Launch CReader 3001 sometimes fails to establish a connection and displays link error.
You may end up wasting a lot of time trying to retrieve a diagnostic code.
2. EVAP test
Strength:
When you suspect a leak in the fuel system, it’s advisable to perform the EVAP test.
Fortunately, Launch CReader 3001 can retrieve EVAP codes.
The EVAP monitor points out vapor leaks when pressure or vacuum is applied to vapor lines, fuel tank, and charcoal canister.
A diagnostic trouble code is generated when EVAP detects a leak that exceeds 0.040 or 0.020 for vehicles manufactured after 2000.
Equally, if the monitor detects an absolute lack of airflow while the purge valve is opened, it will generate a diagnostic code.
Launch CReader 3001 will help you to retrieve the diagnostic codes ranging from P0440 to P0457.
Even better, the inbuilt DTC lookup library will define the codes simplifying the analysis and repair process.
Weakness:
Launch CReader 3001 does not display correct EVAP codes in vehicles.
If you are not careful, you may end up replacing parts that have no faults or leaks at all.
You will also discover that it does not retrieve EVAP codes in heavy trucks.
3. Clear Check Engine Lights
Strength:
Not only will this OBD II scan tool read the check engine lights, but it also defines the code.
Since Launch CReader 3001 is a plug and play scanner, all you need is directly connecting it to your car.
It has a link connector that connects to a 16 pins port located near the steering wheel.
Once you have established a connection, you can use the up or down buttons to select codes.
You can also use the return button when you want to go back to the previous code.
Once you have identified the code that you want to clear, all you need to do is press the “OK” button.
Weakness:
Launch CReader 3001 has a small screen that makes the clearing of codes rather tricky.
Usage
If you have an OBD II compliant vehicle, chances are Launch CReader 3001 can help you diagnose it. This is because the scanner is compatible with most US models manufactured from 1996.
It can also diagnose EU and Asian models manufactured after 2000 and newer foreign and domestic car models.
Besides, Launch CReader 3001 is compatible with all OBDII/EOBD and CAN protocols.
It also supports seven languages: English, Portuguese, Russian, Italian, Spanish, French, and German.
Who is it for?
Launch CReader 3001 is suitable for DIY and average car owners who want to perform basic diagnosis on their cars.
This OBD II scan tool is user-friendly as it defines diagnostic trouble codes.
As a result, an average car owner can use this code reader even if they have no mechanics background.
Check Price at AmazonThe Bottom Line
If you are looking for a basic scan tool that can help you clear the Check Engine Light, Launch CReader 3001 is an appropriate diagnostic tool. It is designed to perform basic functions such as the O2 sensor test and the EVAP test.
However, Launch CReader 3001 can be used with other diagnostic tools when more information is needed.
