CC-ID 166 Error Code: What Is It And How To Clear It?

We have made this article to guide you with BMW error codes. We will guide you on coming across error codes. Most owners of the BMW will experience getting CC-ID codes (Check Control) on their cars. 

So what is CC-ID 166, and how to clear it? The CC-ID 166 means Engine Coolant Level Low. You can get a professional to clear it or follow the steps below.

It is something that BMW car owners would get to experience at least once. Some car drivers already experience it regularly. 

And most of these car owners, especially those who are still new, most likely do not know this matter. There are a lot of BMW bulbs that can be changed with ease. 

But there are times when you can’t access your bulbs. If this happens, you can seek a professional to do it. 

Some CANBus error codes might be displayed because of a fault, but the bulb is doing fine. You need to access your BMW CC-ID codes, and they can give you additional information about the condition of your vehicle. It can also help you with troubleshooting some faults or errors. 

So if you want to learn more about CC-ID error codes, stay for an exciting and informative read. 

CC-ID 166 Error Code

What Is The CC-ID 166 Code?

The CC-ID 166 code means Engine Coolant Level Low. As obvious as it sounds, this error code tells you that the engine coolant level is low. Therefore, you will have to refill your engine coolant. 

Engine coolant is the one responsible for keeping your vehicle from overheating. And so, this fluid is essential. So, with that, if you see this error code, you have something wrong with your engine coolant level.

How To Clear A CC-ID 166 Code?

If you want to clear your CC-ID 166 code, here is what you must do. Follow these steps so that you can clear a CC-ID 166 code. 

  1. The first thing that you have to do is turn the ignition on. 
  2. After turning it on, dismiss or wait patiently for all the warning and failure messages to disappear. 
  3. With the left stalk to navigate to the “check” submenu. You can then cycle through all the messages.
  4. After cycling through the messages, you have to press the BC button on the left stalk and hold it for about five (5) seconds.
  5. After that, release the button if the BMW CC-ID codes appear on the bottom display.
  6. Cycle through the messages once again. You will now then see failure and warning code under each message.
  7. Finally, compare the message number with the list below to find out more specifically about the cause of the warning or the failure message to show on the instrument cluster.

What To Do When You See CC-ID 166 Code?

If you see this CC-ID 166 code, then this means that your engine coolant level is low. If you see this, it means the engine coolant level on your vehicle is very low. So what you have to do is to refill your engine coolant. 

Engine coolant keeps your vehicle from overheating. Therefore, it is crucial to have enough level of your engine coolant. 

Is It Bad When You See CC-ID 166 Code?

Vehicles are only machines, and they can malfunction too. So then, if the code appears, there can be a possibility that it is just a malfunction. But, on the other hand, it’s considered bad if the code is not malfunctioning. 

Engine coolant keeps your engine from overheating. Without engine coolant, the engine is at risk of overheating, which is bad.


In summary, BMW vehicles are popular with drivers, and they are one of the top car brands. However, having a BMW has a lot to learn. 

For example, they have these error codes that appear on the dashboard, and it can be challenging to know their meaning. And you need to know about this so that you can check your vehicle. And so, if you see CC-ID 166 error code, this means that your engine coolant level is low.



Image credits – Canva

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My name is Hank, and I've been in the automotive industry for 27 years. I've been working in my own auto repair shop for the last 13 years, and now I want to help you here, on my blog. Let me know if you have any questions. Read more