The A12 Honda maintenance code represents an oil change, tire rotation service, engine and cabin air filter replacement, and drive belt inspection. The “A” stands for an oil change, the “1” stands for a tire rotation, and the “2” stands for an engine and cabin filter replacement with drive belt inspection.
The A12 service is similar to the A1 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 at home without needing special tools.
Honda A12 Service Cost
The A12 service typically costs $180 to $295. The cost will depend on the specific Honda vehicle you have and the labor cost rate.
| Item | What it covers | Typical cost |
|---|---|---|
| “A” | Engine oil change | $50 – $100 |
| “1” | Tire rotation | $30 – $45 |
| “2” | Engine and cabin air filters, drive belt inspection | $100 – $150 |
| Total Honda A12 service | $180 – $295 | |
For simple maintenance services like the A12, most dealerships and 3rd party auto shops offer coupons and discounts. We suggest calling several locations beforehand to get the best deals.
“A” Service Cost
The “A” service, or oil change, typically costs $50 to $100 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 also offers an “A” service (oil change) cost estimate for your vehicle and location:
Oil Change Estimator
“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:
Tire Rotation Estimator
“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 A12 DIY Cost
Want to save money or prefer to rely on yourself for your Honda’s maintenance? Performing an A12 service yourself will cost $100 to $200 depending on the 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.
A12 Maintenance Minder Description
The Honda maintenance minder code sheet above lists all the main and sub service items with A12 highlighted.
“A” Main Service Item
Honda describes the “A” service as an engine oil change only. Although it recommends oil change only, it is best practice to replace the oil filter whenever the oil is changed.
“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 A12 Service Due?
The Maintenance Minder displays A12 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: an A1 becomes A12 once those additional items fall due in the same visit.
Honda Models That Show the A12 Code
The A12 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 A1 — the same service without engine & cabin air filter replacement, drive belt inspection
- Honda B12 — the same items, but with an oil filter change and full multi-point inspection
- Honda A123 — adds transmission fluid + transfer case fluid (if equipped)
- Acura A12 — the Acura equivalent of this code
- All Honda Maintenance Minder codes — the full reference table
The Filters and Drive Belt in A12, in Detail
Sub-item 2 is two filters and a look at one belt, and it is the part of A12 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 A12 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 A12 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 A12: the “A” is a plain oil change, sub-item 1 adds the tire rotation, and sub-item 2 is the item above. Each is tracked separately by the Maintenance Minder, so A12 is a bundle of independent jobs that happened to come due together, not one procedure with a single price.
Honda A12 Service FAQ
What does the Honda A12 code actually include?
Reading it left to right: the “A” is an oil change, and each number after it is a separate job. For A12 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 A12 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 A12 tolerate a few hundred miles of delay, but there is no benefit in stretching it.
Can I do the Honda A12 service myself?
Yes, most of it. A12 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 A12 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. A12 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 A12 mean something is wrong with my Honda?
No. It is the maintenance schedule, not the diagnostics. A12 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 A12 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 A12 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.