Common codes and what they include
Most visits combine a letter with one or more numbers. These are the codes people look up most often:
A1
An oil change plus a tire rotation. Honda’s A main item lists engine oil; check whether your shop also changes the filter.
B1
The B service — oil and filter change plus Honda’s list of inspections, including the front and rear brakes — with a tire rotation. One of the most common codes you’ll see.
A12
Oil change, tire rotation, a new engine air filter and cabin (dust and pollen) filter, and a drive-belt inspection.
B12
The B service and tire rotation, plus the subitem 2 work: new engine air and cabin filters and a drive-belt inspection.
B13
The B service and tire rotation, plus new transmission fluid.
B123
The B service, tire rotation, both air filters and the belt inspection, and new transmission fluid — a bigger visit worth budgeting for.
B17
The B service and tire rotation, plus new brake fluid.
Any other combination works the same way: do the letter’s service, then add each number’s job from the table above.
What the oil life percentage means
The Maintenance Minder also shows the remaining engine oil life as a percentage. It’s calculated from how the engine has actually been used — temperature, speed, trip length and more — rather than a fixed mileage.
On many models, the codes appear as the oil life gets low: a “service due soon” message around 15%, “service due now” around 5%, and “past due” at 0%, after which the car may start counting the distance you’ve driven past due. The code shown with the message tells you which service to book.
Don’t confuse it with the oil pressure light. A red oil can symbol means low oil pressure — stop safely and check the oil, rather than waiting for a service appointment.
The calendar limits the Minder doesn’t show
Because the Minder runs on how the car is used, a car that’s driven very little may not show a code for a long time. Honda covers that with calendar limits in the owner’s manual. On many models:
- Engine oil: change it at least once a year, even if the Minder hasn’t asked.
- Brake fluid (subitem 7): replace it every 3 years if the code hasn’t appeared by then.
Some manuals also call for more frequent filter or fluid service in dusty, very hot or mountainous driving. Check the footnotes for your model, and see our guide to mileage versus time limits.
After the service: reset and record
Once the work is done, the Minder is reset so it can start counting again. Shops do this as part of the service; the reset steps vary by model and are in your owner’s manual.
A reset isn’t a record, though. Keep the receipt and write down the date, odometer reading, the code shown, and each job actually done. That history matters for warranty claims, resale, and simply knowing when subitems like brake fluid were last done. Our guide to maintenance records shows a simple format.
Common questions
Do I have to go to a Honda dealer for these services?
No. In the US you can have maintenance done by any shop, or do it yourself, without voiding the warranty — but keep receipts showing the work was done on time.
Is the B service always more expensive than A?
Usually, because it adds the oil filter and a list of inspections. The numbers matter more: a B123 includes far more work than an A1.
What if a shop recommends more than the code says?
Ask which item in your owner’s manual it comes from. Inspection findings can justify extra work, but “recommended” add-ons aren’t part of the Maintenance Minder code.
Does every Honda show the same codes?
The system is the same, but not every model has every subitem — subitem 6 only applies where there’s a rear differential, for example. For a worked example on one car, see our 2016 Civic Maintenance Minder guide.