What is AdBlue Reset and Why Need To Reset AdBlue?

Apr 24,2023
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What is AdBlue reset?

AdBlue, also known as Diesel Exhaust Fluid (DEF), is a liquid solution used in diesel engines to reduce harmful emissions of nitrogen oxides (NOx). The AdBlue system consists of a tank, a pump and various sensors to monitor liquid level, pressure and temperature. Whereas, AdBlue Reset is the process of resetting the AdBlue system counters after refilling the AdBlue tank.

Why need to reset AdBlue?

When we refilled the AdBlue tank, the AdBlue system needed to be reset to clear the warning light on the dash. Because the AdBlue system needs to know that the tank has been refilled and the fluid level is now normal.

If AdBlue is not reset, the warning light may continue to display even when the AdBlue tank is full, which can be annoying to the driver. There is another condition that, if the AdBlue system is not reset after refilling, can cause the engine to go into limp mode, a safety feature that limits engine power and speed to prevent damage to the engine or emissions system.

Therefore, we reset the AdBlue system after refilling the tank to ensure the engine is running properly and meeting emission standards.

How to reset AdBlue warning?

When the AdBlue water tank is low, a warning light will appear on the instrument panel, prompting the driver to refill the tank. So, how do I reset the AdBlue warning? In order to reset the AdBlue warning in the vehicle, we can follow these steps:

1. Find the AdBlue tank, usually under the hood or in the trunk of the vehicle

2. Fill the tank with AdBlue until the warning light goes off.

3. Start the engine and let it run for a few minutes to allow the system to recognize the new AdBlue liquid level.

4. Shut down and restart the engine to check if the warning light has reset.

After resetting, if the warning light does not go off, or if the tank is full but the warning light remains on. You may need to take your vehicle to a repair center for a professional technician to diagnose and reset AdBlue again.

Can AdBlue damage a diesel engine?

Many people have this question: Can AdBlue damage a diesel engine?

In fact, AdBlue is a solution of urea and deionized water, used as a diesel engine exhaust treatment fluid, which is specially designed to reduce harmful pollutants emitted by diesel engines. AdBlue is injected into the exhaust stream of a selective catalytic reduction (SCR) system in a diesel engine, converting NOx into harmless nitrogen and water vapour.

So, AdBlue is harmless to diesel engines, it does not directly interact with the fuel or the combustion process.

But we need to note that AdBlue can only be used in SCR-equipped diesel engines using this fluid. Adding AdBlue to a diesel engine that is not equipped with SCR technology may damage the engine and its components.

Can I run my diesel without AdBlue?

We do not recommend running diesel engines without AdBlue. If a diesel engine is run without AdBlue, the SCR system will not work properly, resulting in increased NOx emissions. This can lead to environmental hazards and potential penalties if the vehicle is subject to emissions regulations.Moreover, it will also cause damage to the engine itself. The purpose of the SCR system is to protect certain parts of the engine from the high-temperature exhaust gas. Without AdBlue, these parts will break down over time.

Can I use water instead of AdBlue?

No, water is not a substitute for AdBlue. Using water instead of AdBlue will not have the same effect and will damage the engine and exhaust system. Also, using water instead of AdBlue could cause your vehicle to fail emissions tests and violate environmental regulations. It is important to always use the proper fluid specified by the vehicle manufacturer to ensure proper operation and compliance with regulations.

What happens if you mix AdBlue with diesel?

AdBlue cannot be replaced with water nor mixed with diesel. If AdBlue is accidentally added to a diesel fuel tank, it can cause a variety of problems.

First of all, AdBlue does not mix with diesel, but forms a layer on the bottom of the tank. This can clog the fuel system and cause engine damage.

Additionally, AdBlue can corrode metal parts in the fuel system, including injectors, pumps and lines.

Therefore, if you accidentally mix AdBlue with diesel, be sure to stop the engine and drain the tank immediately. Affected components should also be inspected and replaced if necessary to prevent further damage.


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