black honda

Honda Code B123 [Maintenance Service Explained]

Due to its proven reliability record and toughness, As a mechanic, Honda is my favorite auto manufacturer.

However, just like all other vehicles they need to be serviced regularly to keep them running at their best.

In this article, I am going to talk about what the B123 service is and what is included, and how to reset the code after performing the necessary maintenance. Let’s get to it.

Honda Code B123 Meaning

In short, code b123 is a service minder on your Honda that tells you that it is time to do some maintenance. The code itself stands for the following:

  1. B = Engine Oil Change
  2. 1 = Tire Rotation
  3. 2 = Air and Cabin Filter Change
  4. 3 = Transmission Fluid Change

The Honda’s service minder is an electronic system that monitors your vehicle’s service requirements.

This system is a great way to keep track of when you need maintenance done on your car.

The code will appear in your dash and it will tell you what needs to be done.

What is Included in the B123 Service?

I have briefly explained, what this service code means and what is included.

Now I want to get into more detail about what the B123 service includes.

When you take your Honda for a B123 service, expect them to do several things including:

Engine Oil Change:

Engine oil is one of the most important fluids in your Honda. It keeps your engine lubricated and cool, which helps extend the life of the engine.

Every Honda vehicle comes equipped with a recommended interval for oil changes. Typically this is every 5,000 -7500 miles or once per year.

As a rule of thumb, if you drive under normal conditions then it’s generally safe to go by these intervals.

But if you drive in stop-and-go traffic often or live in an area that has harsh weather conditions like snow or rain then you may want to change your Honda’s engine oil more frequently than what’s recommended by the manufacturer.

Tire Rotation

Another thing that is included in the Honda’s B123 service is tire rotation.

Tire rotation is important because it helps the tires wear evenly and prolongs their life.

If you don’t rotate your tires regularly then you could end up with a bent rim or even worse, a blowout.

For this reason, Honda includes tire rotation as part of most services.

Air Filter Replacement

Air filter plays are vital role in your Honda’s engine. The Air filter is responsible for filtering out dust particles, debris, and insects from entering the engine.

If the air filter is clogged, then it won’t be able to do its job. This can lead to higher fuel consumption and many other problems with your Honda.

Cabin Filter

The cabin filter is responsible for filtering out dust and debris from entering the cabin of your car.

When a vehicle’s air filter becomes clogged, the efficiency of the HVAC system will be compromised, thereby causing poor-quality air inside your Honda.

Transmission Fluid Change

The last thing that is included in the Honda b123 service is transmission fluid change.

In simple terms, Transmission fluid is responsible for lubricating, cooling the transmission, and preventing them from wearing out.

When the transmission fluid becomes contaminated with dirt, then it will lead to premature wear and failure of critical parts like clutches and brake bands.

The Honda b123 service includes a complete drain and refill with fresh transmission fluid.

Where Can You Reset Honda B123 Code

When it comes to doing a code B123 service and resetting the code, you have a couple of options, these are

1. Honda Dealership:

The first option, which most people opt for is going to the nearby Honda dealership to do the service.

This is the best option because the technicians at these dealerships are trained to do the job.

However, this can get expensive especially if you don’t have any warranty left on your car. This is also much more convenient than doing it yourself as they will handle everything for you.

2. Independent Honda Mechanic:

Another good option would be to take your vehicle to any qualified Honda mechanic and have them do the service.

This will be cheaper than going to a dealership, but you need to make sure that they are qualified to do this job as you don’t want someone who just started working on cars doing this for you,

especially since transmission fluid needs to be replaced as well, which requires trans fluid recommended by Honda.

3. DIY

If you are handy and mechanically inclined then, I recommend, you change the oil, air filter, and cabin filter yourself and then only take your vehicle for a Transmission fluid change. This will save you some extra money.

How Much Does Honda B123 Service Cost?

The average cost is $300 for both parts and labor, the prices range from $200-400 depending on where you decide to take your car.

Additional Sources


Leave a Comment

Your email address will not be published. Required fields are marked *