Honda B12 Service [Checklist, Cost & What’s Included]

Have you ever seen the ‘B12 service’ message pop up on your Honda’s dashboard and thought, ‘What?’ You’re not alone! Around 80% of Honda owners will see that message sometime during their car’s life.

The ‘B’ part of ‘B12’ is the key to understanding that it’s not just about topping off the oil. Yes, it does include fresh engine oil and a new oil filter, which are essential for keeping your engine running smoothly. 

But the real value of the ‘B’ service is that it also includes a complete look at all the important systems in your car, things like your exhaust, how your steering and suspension are doing (especially important for bumpy roads!), and, of course, your brakes. This inspection is all about catching little things early before they become bigger headaches and bills, and ensuring your Honda stays dependable for you.

Those numbers after the “B,” like the “12,” are like extra notes from your Honda. 

They tell you about even more specific things that need attention. So, ‘B12’ indicates that, in addition to the basic oil and filter change, the ‘1’ denotes tire rotation and inspection, while the ‘2’ signifies that the engine and cabin air filters should be replaced.

In a nutshell, this article explains the code that tells you exactly what your car needs to stay well maintained and in good health for many years.

Understanding Honda’s Maintenance Minder Coding System

Honda’s Maintenance Minder system moves beyond simple service notifications by employing a structured coding system to communicate precise vehicle maintenance requirements. 

This system utilizes letters to designate main service types and numbers to indicate supplementary sub-services. This combination allows for a highly specific and informative service reminder, such as the B12 code example.

The system centers on two major service designations—’A’ and ‘B’—which are typically supplemented by numerical sub-service codes (1–6). Once familiar with these codes, Honda owners can effectively manage their vehicle’s maintenance requirements.

Main Services

What does the Honda B12 Service Code Mean?

The Honda B12 service code is a setup for reminders to your car’s built-in maintenance system, especially for scheduled car servicing. 

Put simply, the code refers to an oil change and an oil filter replacement coupled with several inspection processes for maintaining the smooth running of everything in the car. 

Parts inspected during this check-up include brakes, tire rotation, and other major components. These parts are the air filter, dust filter, and drive belt. It sounds high but think of it as your car’s way of saying that a little TLC is needed to keep things in great shape.

“B” stands for basic maintenance service items like oil and filter change, proper braking system inspection, and fluid level checks. 

Then, the other digits (for example, 1 and 2) refer to additional instructions, such as tire rotation or the checking/replacing of filters and belts.

While that looks like a lot, this maintenance program has been designed to prevent more serious problems from occurring in the future and keep your Honda performing well. 

The scheduled maintenance is an ideal guide that keeps you alert about what needs to be done so that your car is safe and efficient for your everyday driving.

Honda B12 Service: Checklist

The Honda B12 service includes an engine oil and filter change, tire rotation, replacement of engine and cabin air filters, a check of the brake and suspension systems, an inspection of the drive belt condition, and replenishment of necessary fluids.

Oil and Filter Change (B)

Honda vehicles require oil and oil filter replacement services, just like any other internal engine vehicle. The essential service is signified by the “B” code in B12. Although recommended oil change intervals vary based on the Honda model, engine age, and the type of oil used, a general average is around every 7,500 miles.

Synthetic oils may allow intervals of up to about 10,000 miles, while conventional oils typically require changing every 5,000 miles. Both mileage and time should be considered; if your vehicle reaches the recommended mileage or the time interval (typically six months to a year) before the other, follow the recommendation that comes first.

Tire Rotation (1)

The ‘1’ applies to all Hondas (and other cars) and indicates the standard maintenance procedure of tire rotation. This process ensures even wear on all four tires, which prolongs their lifespan and maintains uniform ride quality and handling.

The process involves systematically repositioning the tires according to a pattern determined by the vehicle’s drivetrain configuration and tire type. The common “forward cross” pattern is utilized by front-wheel drive (FWD) Hondas, where front tires are moved to the rear on the same side, and rear tires are crossed to the opposite front position. 

The alternative for such vehicles would be the “X-pattern”, where front and rear tires are crossed to opposing sides. Straight Rotation is a type of rotation pattern usually used on directional tires that have been made to turn in one direction only to give better performance.

Moving forward or backwards directly on the tires with movement only on the same side will be found in this rotation pattern because it retains rotation orientation. Honda, compared to other companies, recommends a tire rotation every 5,000 to 7,500 miles for both front-wheel-drive and rear-wheel-drive models.

Engine Air and Cabin Air Filters (2)

The “2” sub-code under B12 points to air filter replacement for the cabin and engine. The engine air filter traps contaminants that could enter the air intake, thereby protecting engine performance. The cabin air filter is normally contained in the cabin area (usually behind the glovebox), filtering outdoor air into the cabin.

Mileage intervals for air filter replacement average around 15,000 miles on the low end and up to 30,000 miles on higher ranges. Different driving frequencies and different environmental conditions influence these figures.

Frequent driving in severely polluted areas typically necessitates more frequent replacement. Although relatively inexpensive and quite convenient for DIY professionals, replacement would still cost way less when installed by service centers.

Brake Inspection (B)

The “B” designation within B12 also includes brake system maintenance. It is a complete inspection of the brake system, including brake pads, rotors, parking brake components, and brake lines. After the inspection, owners will normally clean and lubricate the front and rear brakes. Adjustments may even be made to the parking brake if required.

Brake pads typically need to be replaced regularly because they wear out quickly.

According to Honda, brake pads should be replaced every 40,000 to 50,000 miles—depending on driving habits and conditions—and brake fluid should be replaced every 3 to 5 years. Always consult your owner’s manual for specific recommendations.

Suspension Inspection

The suspension inspection is usually part of the Honda B12 service, along with the brake inspection. The system includes various interacting elements such as shock absorbers or dampers, springs, tie-rods, and bushings. 

It determines ride quality, comfort, and overall vehicle stability. However, most of these components would show wear and tear from bad roads.

Most of the time, it’s essential to check regularly, but this would point out potential concerns. Under normal conditions, Honda recommends performing a suspension inspection every 20,000 miles (32,000 km) or every twelve months, whichever comes first.

Drive Belt Inspection

The drive belt inspection is a standard part of the B12 service, particularly if it has been two or more years since the last inspection.

This drive belt or serpentine belt powers all engine driving accessories, such as the alternator, water pump, power steering pump, and air conditioning compressor.

It is subject to wear from regular use and may require periodic adjustments. Honda recommends checking—and if necessary, adjusting—the drive belt at least every 24 months (2 years) or after 30,000 miles (48,000 km), whichever comes first.

Fluid Inspection and Replacement

Apart from engine oil, Honda vehicles are equipped with other vital fluids like coolant, power steering fluid, transmission fluid, and brake fluid. 

All these fluids are regularly inspected during B12 services. Over time and with mileage, they may become contaminated or depleted due to leakage.

Also included in this inspection are the fluid reservoirs, any associated hoses, and possible damage or leaks leading to lower fluid levels and reduced vehicle performance. In this regard, reference can be made to your owner’s manual for exact replacement schedules, which are usually found in the “Maintenance Schedule” section.

How to Perform the B12 Maintenance Service on Your Honda

After determining the type of service you require, let’s proceed with how to perform the repairs. Below is a list of supplies and tools needed to complete the Honda B12 service:

Supplies:

• Engine oil
• Engine oil filter
• Engine air filter
• Cabin air filter

Tools:

• Basic socket set with assorted wrenches and ratchets
• Tire pressure gauge
• Tire inflator
• Torque wrench
• Flashlight
• Inspection mirror
• Tread depth gauge

Oil and Oil Filter Change

Engine oil and filter replacement: 

• Warm the engine for a few minutes to bring it to operating temperature.
• Remove the oil fill cap to allow some oil to drain quickly.
• Raise the car with a jack and secure it with jack stands.
• Remove the drain plug from the oil drain and allow the oil to flow into a pan.
• Then, remove the old oil filter and install the new oil filter.
• Replace the drain plug gasket (if needed).
• Reinstall and tighten the drain plug to the specified torque of 30 ft-lbs using a torque wrench.
• Add fresh engine oil according to the car’s specifications.
• Check the oil level with a dipstick to ensure it is at the right level.
• Start the engine and confirm that the red oil pressure light turns off.
• Check the oil level again to confirm it is accurate.

Tire Rotation

To rotate your tires,

• Check the tire pressures and adjust them to the correct specifications, which can be found on the tire placard (usually located on the driver’s door jamb).
• Loosen the wheel lug nuts while the car is still on the ground.
• Finally, raise the vehicle and put jack stands securely under it.
• Remove the lug nuts and take the removed wheels.
• Rotate the tires according to the procedures specified in the owner’s manual (for front-wheel-drive or rear-wheel-drive vehicles).
• Reinstall the wheels and nuts.
• Lower the vehicle and torque the lug nuts to 80 ft-lbs.

Removal and installation of the air filter in the engine

• Changing the engine air filter is easy:
• Open the hood and look for the air cleaner assembly. 
• Remove the air cleaner cover to access the filter.
• Pull out the old filter and replace it with a new one. Securely replace the air cleaner cover.

Cabin Air Filter Replacement

In most Honda vehicles, the cabin air filter is located behind the glove box.

Here’s how to replace it:

1. Open the glove box and detach the damper hook.
2. Press in the glove box stops to release it.
3. Remove the air filter cover.
4. Replace the old filter with a new one.
5. Reinstall the filter cover, reattach the glove box damper hook, and close the glove box.”

These simple steps enable you to carry out basic work in your Honda B12 service. Always cross-reference specifications in your owner’s manual and confirm that your tools are in good shape before executing work on the vehicle. If you feel uneasy about any of the steps, do not hesitate to call a mechanic for assistance.

How Much Does It Cost to Service Your Honda?

The cost of servicing a Honda can vary greatly depending on the service required.

For example, a B12 service that includes an oil change, tire rotation, and air filter replacement may cost between $200 and $300 when performed at a dealership or by a mechanic.

However, the cost can be considerably lower if you perform the service at home.

Service Cost Breakdown Common

Do-it-yourself oil change: $20-$40 for oil and filter if you do it yourself.

Mechanic: You’re usually looking at $70 for them to do it.

Oil change + Tire Rotate: The combined cost of this service can easily surpass $100.

Dealer and Mechanic Pricing

Typically, when the service is performed at a dealership or by a trusted mechanic, the labor costs are included in the overall price.

Labor time can vary, and different Honda models have different part prices. For instance, a Honda NSX will have much more expensive parts than a CR-V.

The Significance of Timely Honda Maintenance

Following your Honda service schedule can help ensure optimal vehicle performance and prevent expensive repairs in the future.

Following the manufacturer-recommended maintenance intervals ensures that all necessary services are performed on time.

Just as routine medical check-ups are important for maintaining good health, regular maintenance is essential for your Honda to last longer and operate trouble-free. A vehicle comprises many systems that require maintenance, and performing these tasks at regular intervals keeps the car efficient and economical.

Every automotive manufacturer makes available suggested service intervals, mileage, or time-specific claims as to when those parts and fluids could wear out and require replacement. For example, Honda suggests changing the engine oil at intervals ranging from approximately 7,500 to 10,000 miles, depending on the type of oil used and other variables.

Detailed schedules are placed in the owner’s manual of every Honda vehicle to ensure easy maintenance tracking. Modern Honda models may have built-in systems that automatically alert drivers when scheduled service is due.

How Long Can You Drive After Getting a B12 Service Notice?

You do have some time before the B12 service notice turns critical, and you can still drive your vehicle for a few more weeks without it, but ideally, you should get that service done as soon as possible to avoid any potential issues or damage.

Typical Recommended Honda Service Intervals

Here’s a breakdown of what that looks like for usual maintenance for Honda and their intervals based on mileage:

• 10,000 miles (6-12 months): Oil Change, Fuel Filter Check, Tire Rotation.
• 20,000 miles (6-12 months): Oil Change, Brakes and Suspension Inspection, Fluid Checks.
• 30,000 miles (18-24 months): Oil Change, Replace Engine Air Filter and Cabin Air Filter, Replace Transmission Fluid, Spark Plug Check, Valve Clearance Check.
• 40,000 miles (18-24 months): Same as 20,000 miles with added suspension and brake inspection.
• 50,000 miles (30-36 months): Oil change, tire rotation, fuel filter check.
• 60,000 miles (30-36 months): Major service with oil change, air filter replacement, transmission fluid replacement, suspension, and brake inspection.
• 100,000 miles (54-60 months): More in-depth checks, including timing belt replacement, spark plugs, and water pump inspection.

Common Honda Service Codes

Here’s what the different Honda service codes generally represent:

• A (Main): Oil and filter change.
• B (Main): Oil and filter change, brake inspection.
• 0 (Sub): Multi-point inspection.
• 1 (Sub): Tire rotation.
• 2 (Sub): Engine and cabin air filter replacement.
• 3 (Sub): Transmission fluid replacement.
• 4 (Sub): Spark plug replacement, timing belt replacement.
• 5 (Sub): Coolant replacement.
• 7 (Sub): Brake fluid replacement.

If you are interested we have an article that covers all Honda Maintenance Codes!

Conclusion

The expenses of Honda maintenance will vary according to various services and the service location.

Self-service, of course, will be less expensive, but with professional service comes the cost of knowledge and convenience. Regularly scheduled maintenance keeps your Honda running smoothly and dependably for a long time.