KONNWEI KW818: OBDII Car Diagnostic Tool Review

If your car is OBD/EOBD compliant then KONNWEI KW818 Scanner is a must-have diagnostic tool.

KW818 review
KONNWEI OBD2 KW818 Scanner Code Reader Car Diagnostic Tool Auto Universal for Check Engine Automotive Vehicle Breakdown System
44 / 5
Supports over-voltage protection, real-time battery monitoring (check battery status before driving or diagnostics).

KONNWEI KW818 Overview

Have you ever wonder why a loose gas cap can cause the Check Engine Light to pop up? If you do not have a diagnostic tool, it means that you will be making numerous trips to the mechanic. At the same time, you will spend a fortune on minor repairs that you can fix equally them.

Luckily KONNWEI KW818 scanner can help you identify and fix these problems.

Want to find out the diagnostic capabilities of KONNWEI KW818, then read this comprehensive review featuring strengths and weakness based on user experience.

KONNWEI KW818 scan tool has some features that allow you to perform some specific functions.
Are you trouble with your car broke down on the way?
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Detailed Review of KONNWEI KW818

Features and functionality

KONNWEI KW818 scan tool has some features that allow you to perform some specific functions. These functions include:

With KONNWEI KW818 diagnostic tool you will be able to establish your battery in under a minute.
However, if KONNWEI KW818 displays a yellow LED then it means that there are some emissions issues that need to be fixed.
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Perform I/M readiness test

Strength:

KONNWEI KW818 scanner has special I/M readiness features that can help you establish the readiness status of your car. The diagnostic scanner has three highly effective I/M readiness status LED indicators.

  • The first I/M LED indicator is the Green LED indicator. When you run an emission diagnostic test using KONNWEI KW818 and you end up with Green LED, what does this mean? It means that your car will pass the emission test as it is in good condition.
  • However, if KONNWEI KW818 displays a yellow LED then it means that there are some emissions issues that need to be fixed. Besides, you need to clear emission DTC
  • The last indicator is the Red LED indicator.nIf you end up with a Red LED after checking for I/M readiness status it means that your car has some serious emission problems. Your vehicle will not pass the emission test unless these issues are fixed.

Weakness:

Does not retrieve the specific diagnostic trouble codes of I/M readiness tests but give general emission status.

Over-voltage protection

 KONNWEI KW818 scan tool plays an important safety role in protecting your vehicle.
When malfunction indicator light comes on it usually points to many issues. 
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Strength:

Over-voltage protection is another important function that KONNWEI KW818 is designed to perform. Before driving or performing any diagnostic functions, it’s often recommended to check your battery status and other function such ads

With KONNWEI KW818 diagnostic tool you will be able to establish your battery in under a minute.

Why do you need to perform over-voltage protection? Well, driving or performing diagnostic functions with excess voltage can damage your car electronic components. 

Over-voltage can degrade the components of your car or cause the circuit malfunctions, or even cause a fire. The comforting thing about KONNWEI KW818 is that it can help you avert all these problems by checking the status of your battery.

Simply put, KONNWEI KW818 scan tool plays an important safety role in protecting your vehicle.

Weakness:

It can only diagnose the 12 Volt petrol cars. It does not support the diesel 24-volt vehicles, trucks, as well as electric cars.

Perform oxygen sensor tests

When malfunction indicator light comes on it usually points to many issues. One of these issues includes a faulty oxygen sensor.

  • Normally when the oxygen sensor detects elevated levels of oxygen within the exhaust system it sends a signal to the onboard computer.
  • A diagnostic trouble code is stored on the on-board computer and you can retrieve the code using KONNWEI KW818 diagnostic tool and the DTC will point out if there is a problem with the fuel system or if the oxygen sensor itself is faulty.

If you are a car enthusiast, you can fix the problem or take it to a mechanic if the problem is serious.

After fixing the problem, you can use KONNWEI KW818 to clear the malfunction indicator light.

Compatibility 

KONNWEI KW818 scanner is compatible with OBD2 and CAN vehicles manufactured after 1996.

Besides, the vehicles should be 12 V petrol vehicles that include SUVs and passenger cars.

These vehicles can either be domestic or imported.

However, KONNWEI KW818 does not support 24 V diesel trucks and heavy vehicles.

KONNWEI KW818 vs Innova 3150f vs and Innova 3100j Comparison Chart

ancel ad410
ANCEL AD410 Multi-Systems OBD2 Scan Tool
KONNWEI KW818 review
KONNWEI OBD2 Car Diagnostic Scanner, KW818 Pro Universal Car Code Reader
autel al519
Autel AL519 AutoLink Enhanced OBD ll Scan Tool
Customer Rating
4.34.3 / 5
55 / 5
4.34.3 / 5
Priceancel ad410 priceKONNWEI KW818 priceautel al519 price
ProsReading freeze frame data; DTC lookup; Retrieving VIN; Support all OBD2 FunctionsCan clear CEL from a wide range of vehicles;
Supports over-voltage protection;
Supports data playbacks; live data stream;
Lifetime update;
Printable diagnostic reports.
Supports full OBDII Diagnosis;
Includes DTC Lookup library;
Performs I/M readiness Test;
Internet updates;
Can perform mode 6 test.
ConsLimited Code Information.Possibility of Compatibility issues.Customer support issues;
Compatibility problems (check carefully before buying)
Bottom LineANCEL AD410 OBD2 Scan Tool is a great choice for beginners or average car owners.KONNWEI KW818 pro suits any average car owners.Autel Al519 is perfect for DIYers and average car owners.

Who is it for?

Average car owners find KONNWEI KW818 really helpful.

This is because it is fundamentally built for car owners who want to perform basic diagnostic functions on their cars.

It has buttons that can help you perform a scan with a lot of ease and quickly clear codes.

The bottom line

Diagnosing your own car using KONNWEI KW818 has many benefits.

  • You will reduce the trips to the mechanic shop as well as save money.
  • It has a wide coverage and updatable software making it possible for you to scan future makes and models.
  • It is also easy to use with an excellent user interface.

KONNWEI KW818 scanner is a diagnostic tool recommended for all average car owners.

A video about KONNWEI KW818

Tim MillerFounderOBD Advisor

I’m Tim Miller from Denver, Colorado. I’m the founder of obdadvisor.com, an automotive blog about "Diagnostic Tools and Auto Repair". 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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10 thoughts on “KONNWEI KW818: OBDII Car Diagnostic Tool Review”

  1. So I’ve tested on 2 cars which didn’t work, a 2012 Toyota Fortuner and a 2004 Opel Corsa Gamma. Any ideas whether the device I’ve purchased is faulty or is it so limited that it can’t detect 2 very common vehicles? It worked on my Subaru Impreza, a Kia Soul as well as n Land Rover Discovery.

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