The B12 Honda maintenance code represents an oil and filter change, a vehicle inspection, a tire rotation, an engine plus cabin air filter replacement, and a drive belt inspection. The “B” stands for an oil and filter change with vehicle inspection, the “1” stands for a tire rotation, and the “2” stands for an engine and cabin filter replacement with drive belt inspection.
The B12 service is similar to the B1 service but it adds engine and cabin filter replacement and drive belt inspection. It is typically performed by a Honda dealership or with a local mechanic but it can also be performed by at home without needing special tools.
Vehicles Requiring Honda B12 Maintenance
Accord
Civic
CR-V
Odyssey
Passport
Pilot
Ridgeline
Honda B12 Service Cost
The B12 service typically costs $220 to $375. The cost will depend on the specific Honda vehicle you have and the labor cost rate.
| Item | What it covers | Typical cost |
|---|---|---|
| “B” | Oil and filter change, plus multi-point inspection | $90 – $180 |
| “1” | Tire rotation | $30 – $45 |
| “2” | Engine and cabin air filters, drive belt inspection | $100 – $150 |
| Total Honda B12 service | $220 – $375 | |
| Doing it yourself (parts only) | around $70 | |
For maintenance services like the B12, most dealerships and 3rd party auto shops offer coupons and discounts. We suggest calling several locations beforehand to get the best deals.
“B” Service Cost
The “B” service, an oil and filter change with a multi-point inspection, typically costs $90 to $180 depending on the Honda model you have. It is a 30 to 40-minute service with the cost mostly from the parts. Some Honda vehicles, like the 2022 Pilot, require synthetic oil which is more expensive.
RepairPal offers a “B” service (oil change and inspection) cost estimate for your vehicle and location but it is separated into two estimators:
Oil Change Estimator: https://repairpal.com/estimator/oil-change-cost
Vehicle Inspection Estimator: https://repairpal.com/estimator/pre-purchase-car-inspection-cost
“1” Service Cost
The “1” service, or tire rotation, typically costs $30 to $45. The tire rotation takes about 15 minutes of labor time. However, we suggest calling your Honda dealership or 3rd party auto repair shop for exact quotes.
RepairPal also offers a “1” service (tire rotation) cost estimate for your vehicle and location:
https://repairpal.com/estimator/tire-rotation-cost
“2” Service Cost
The “2” service is an engine and air filter replacement with a drive belt inspection and typically costs $100 to $150. The whole service takes about 45 minutes of labor time. However, we suggest calling your Honda dealership or 3rd party auto repair shop for exact quotes.
RepairPal also offers estimators for the engine and air filter replacement part of the “2” service:
Engine Air Filter Replacement Estimator
Cabin Air Filter Replacement
Honda B12 DIY Cost
Want to save money or prefer to rely on yourself for your Honda’s maintenance? Performing a B12 service yourself will cost around $70 to $200 depending on the part brands and oil type you use.
We suggest using Honda parts or any aftermarket equivalents. Below are some oil and oil filters made for most Honda vehicles. Check online or at your local auto parts store for exact part numbers.
Oil Filter
Genuine Honda/Acura filters typically run $10–$15. Check the current price on Amazon.
Honda B12 Maintenance Minder Description
The Honda maintenance minder code sheet above lists all the main and sub service items with B12 highlighted.
“B” Main Service Item
Honda describes the “B” service as an engine oil and filter change with a vehicle inspection. The parts included in the Honda vehicle inspection are:
- Front and rear brakes
- Tie rod ends, steering gearbox, and boots
- Suspension components
- Driveshaft boots
- Brake hoses and lines (including ABS/VSA)
- All fluid levels and condition of fluids
- Exhaust system
- Fuel lines and connections
“1” Sub Service Item
Honda describes the “1” service as a tire rotation. In addition to rotating the tires, dealerships will also check the tire pressure and treads for wear or punctures.
“2” Sub Service Item
Honda describes the “2” service as an engine air filter replacement, cabin air filter replacement, and drive belt inspection.
When Is the Honda B12 Service Due?
The Maintenance Minder displays B12 when remaining oil life drops to 15%, which for most drivers falls between 5,000 and 7,500 miles after the last oil service — sooner with heavy city driving, towing or lots of short trips, later with steady highway use. Because the system reads actual operating conditions rather than counting miles, the exact figure differs from car to car.
The sub-items attached to this code run on their own longer intervals:
- 1 — Tire rotation: Every oil service
- 2 — Engine & cabin air filter replacement, drive belt inspection: ~30,000 mi
That is why the code changes over time: a B1 becomes B12 once those additional items fall due in the same visit.
Honda Models That Show the B12 Code
The B12 code can appear on any Maintenance Minder–equipped Honda, including the Honda Accord, Honda Civic, Honda CR-V, Honda Pilot, Honda Odyssey, Honda HR-V, Honda Passport, Honda Ridgeline and Honda Insight. The services it calls for are identical across the range, but oil capacity, fluid specification and labor time vary by engine. Always confirm the specification your engine requires in the owner’s manual.
Related Honda Service Codes
- Honda B1 — the same service without engine & cabin air filter replacement, drive belt inspection
- Honda A12 — the same items with an oil change only, no filter or inspection
- Honda B123 — adds transmission fluid + transfer case fluid (if equipped)
- Honda B124 — adds spark plugs, timing belt & water pump (if equipped), valve clearance inspection
- Honda B125 — adds engine coolant replacement
- Acura B12 — the Acura equivalent of this code
- All Honda Maintenance Minder codes — the full reference table
The Filters and Drive Belt in B12, in Detail
Sub-item 2 is two filters and a look at one belt, and it is the part of B12 most often quoted at a suspiciously wide range. The engine air filter feeds the intake; the cabin filter cleans what comes out of your vents. They are different parts with different jobs, and a shop quoting one price for “the filter” is worth questioning.
On most Hondas the cabin filter lives behind the glovebox and takes a couple of minutes to swap with no tools. The engine filter sits in an airbox held by clips. Neither is difficult, and buying both online typically halves what a dealer charges for the pair. If you only do one part of B12 yourself, make it this one.
The drive belt portion is an inspection, not a replacement. The technician checks the serpentine belt for glazing, cracking and fraying, and confirms the automatic tensioner still holds proper tension. If your invoice for B12 shows a belt replacement charge, that is extra work beyond what the code called for, and you are entitled to ask why.
Where this sits in B12: the “B” is an oil and filter change with the multi-point inspection, sub-item 1 adds the tire rotation, and sub-item 2 is the item above. Each is tracked separately by the Maintenance Minder, so B12 is a bundle of independent jobs that happened to come due together, not one procedure with a single price.
Honda B12 Service FAQ
What does the Honda B12 code actually include?
Reading it left to right: the “B” is an oil and filter change with a multi-point inspection, and each number after it is a separate job. For B12 that means a tire rotation, engine and cabin air filters with a drive belt inspection. They arrive together because the Maintenance Minder counts each item down on its own schedule and shows you whatever has come due at the same time, which is why the same car shows different combinations at different points in its life.
How long can I leave the B12 service?
The oil portion is what has a real deadline. The wrench appears at 15% oil life, sharpens at 5%, and at 0% the display starts counting how far overdue you are. The remaining items in B12 tolerate a few hundred miles of delay, but there is no benefit in stretching it.
Can I do the Honda B12 service myself?
Yes, most of it. B12 is made up of jobs that need basic hand tools and no diagnostic equipment. The filters in particular are among the easiest parts to buy yourself and fit in a few minutes, and doing so usually saves most of the dealer markup on that line.
Is the B12 service covered by Honda Service Pass?
No. Honda Service Pass covers the basic A1 and B1 services — oil, filter, tire rotation and inspection — on 2025 and newer Hondas for one year or 12,000 miles. B12 includes work beyond that scope, so the extra items are chargeable even on a car still inside the term. Ask for an itemized invoice: the oil and rotation portion may still be covered while the rest is not.
Does B12 mean something is wrong with my Honda?
No. It is the maintenance schedule, not the diagnostics. B12 shows as a wrench symbol and simply means the algorithm has counted those items down to zero. A check engine light is a different system reporting a stored fault. If both are lit they are unrelated, and the check engine light is the one to investigate first.
How do I reset the B12 code?
Touchscreen cars: Settings, then Vehicle, then Maintenance Reset. Older models: hold the SEL/RESET button or trip stalk for around ten seconds with the ignition on. Reset only the items actually done — on multi-item codes like B12 you can reset individual sub-items, and clearing the whole code after doing only the oil will hide the jobs you still owe the car. Our Honda Maintenance Minder reset guide covers it model by model.