Honda Civic A12 Service Code – Meaning, Cost and Reset

When it comes to maintaining the pristine condition and performance of your Honda Civic, the car’s built-in Maintenance Minder System plays an integral role.

One crucial alert that this sophisticated system produces is the Honda Civic A12 service code. This code is a prompt for drivers, signaling that specific vehicle maintenance tasks need attention.

A thorough understanding of what the A12 service code entails is essential for any Honda Civic owner. From preserving the vehicle’s optimal functioning to extending its longevity, proper maintenance can make a significant difference.

That’s why this article is set to provide a comprehensive overview of the A12 service code, its meaning, causes, cost implications, and the process of resetting the code after the necessary services are performed.

Understanding the Maintenance Minder System

Honda Civic A12 Service Code

Honda has pioneered an innovative approach to vehicle maintenance through its Maintenance Minder System. This system, a unique feature in Honda vehicles, is like a personal assistant for your vehicle. It monitors various parameters within the engine to accurately calculate when maintenance should be performed.

This Maintenance Minder System considers various aspects like mileage covered and operating conditions to determine when the vehicle needs servicing. In doing so, it eliminates any guesswork, helping you save time and resources. As a Honda Civic owner, understanding this system and its alerts is crucial.

Alerts generated by this system come in combinations of letters and numbers, such as the A12 Honda Service Code. To comprehend these alerts and know what your Honda Civic needs, you must decode these codes.

Decoding the Honda Civic A12 Service Code

The A12 service code is not merely a random alert. Each element of this code, the ‘A’ and the numbers ‘1’ and ‘2,’ represent a specific service that your Honda Civic needs.

The ‘A’ in the A12 code suggests that your engine oil needs to be changed. This is a fundamental part of vehicle maintenance. The engine oil lubricates the moving parts of the engine, reducing friction and preventing overheating.

However, over time, the oil can degrade and collect dust and debris, which may lessen its effectiveness. This makes oil changes essential to maintaining your Honda Civic’s performance.

The number ‘1’ in the A12 code signals that the tires need to be rotated. Tire rotation is crucial for even tire wear, which extends the tire lifespan and ensures a smooth and safe ride. Unaddressed, uneven tire wear can lead to reduced fuel efficiency, poor handling, and even tire failure.

The ‘2’ in the A12 code is a prompt for air filter replacement. The air filter ensures that the air entering the engine is clean, improving the quality of combustion and overall engine performance.

Over time, air filters can become clogged with dust and dirt, affecting engine performance and fuel efficiency. Hence, timely replacement is crucial.

Causes of the A12 Service Code

The A12 Service Code isn’t triggered due to a fault in your Honda Civic. Rather, it is activated based on the vehicle’s mileage and the engine’s operating conditions.

Several factors such as driving habits, environmental conditions, and the type of oil and filters used can influence the appearance of the A12 service code. Understanding these factors and knowing when maintenance is due can help extend your vehicle’s lifespan and maintain its peak performance.

The Maintenance Minder System in Honda vehicles is designed to remind you about due service based on the car’s operational data rather than an arbitrary timeline or mileage count.

This ensures that maintenance tasks are performed only when necessary, enhancing the efficiency of your vehicle upkeep.

Cost Considerations

Addressing the A12 Honda service code has some associated costs. These costs are influenced by a variety of factors including the quality of the parts used, labor costs, and the region in which you live.

For instance, changing engine oil can cost anywhere between $35 to $75, depending on the type of oil your vehicle needs and the service provider’s rates.

Tire rotation can cost between $24 to $120, again depending on your service provider. An air filter replacement can cost from $20 to $60, depending on the type of air filter your Honda Civic uses.

It’s important to note that while performing these services may incur some costs, they are an essential investment towards preserving the health and longevity of your vehicle. Regular maintenance can prevent major costly repairs down the line and ensures that your Honda Civic remains efficient and reliable.

Resetting the A12 Service Code

Once the necessary services have been completed, it’s important to reset the Maintenance Minder System to clear the A12 service code and ensure that the system can accurately monitor and remind you of future service needs. Here’s a step-by-step guide on how to reset the code:

Step 1: Turn on the ignition without starting the engine.

Step 2: Press the Select/Reset knob until the engine oil life indicator is displayed on the screen.

Step 3: Press the Select/Reset knob for about 10 seconds. The engine oil life and the maintenance item code(s) will blink.

Step 4: Press the Select/Reset knob for another 5 seconds.

The maintenance item code(s) will disappear, and the engine oil life will reset to 100.


Q: How do I reset the maintenance minder system after performing the A12 service?

A: To reset the maintenance minder system, you need to press and hold the trip button on your dashboard until you see “Oil Life” and a percentage displayed. Then, press and hold the trip button again until you hear a beep and see “Oil Life” and “100%” displayed.

Q: How much does the A12 service cost at a Honda dealership?

A: The cost of the A12 service at a Honda dealership may vary depending on your location, vehicle model and year, and other factors. However, as a rough estimate, you can expect to pay between $100 and $200 for this service. You may also be able to save some money by using coupons or discounts offered by some dealerships.


Understanding the Honda Civic A12 Service Code is an integral part of maintaining your vehicle. Regular maintenance as indicated by the Maintenance Minder System not only prolongs your vehicle’s lifespan but also ensures smooth and safe driving.

As a Honda Civic owner, taking these service codes seriously and acting on them promptly can save you from costly future repairs. For more information, refer to this article about the A12 service code and its significance.

It is also advisable to have an understanding of other service codes for Honda vehicles. For instance, you can learn about the Honda Accord FCW System Failure and Honda B13 Service Code. This information is essential to stay informed about your vehicle’s health and maintenance needs.

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