Honda Maintenance Minder Codes
Honda Maintenance Minder Codes Explained
Seeing an A1, B1, A12 or B17 code on your Honda dashboard? Learn what your Maintenance Minder is telling you, which services may be due and when to schedule an appointment.
What Is the Honda Maintenance Minder?
The Honda Maintenance Minder is a vehicle maintenance reminder system that estimates when service is needed based on vehicle operating conditions. It displays remaining engine oil life and maintenance codes on the dashboard or driver information display.
Letters such as A and B indicate main maintenance items. Numbers identify additional services, such as tire rotation, air filter replacement or brake fluid replacement. For example, B1 combines the services associated with B and 1.
The Maintenance Minder is a guide, not a substitute for your owner's manual. Service items, code assignments and additional time-based requirements can vary by Honda model, model year and powertrain.
What Do Honda Oil Life Percentages Mean?
Maintenance due soon
Plan a service appointment. Your Honda is approaching its recommended oil service interval.
Maintenance due now
Arrange service as soon as possible. Your engine oil is nearing the end of its calculated service life.
Maintenance past due
Have the recommended maintenance completed immediately. Do not delay necessary service.
Oil life percentage describes estimated oil service life; it does not indicate how much engine oil is in the vehicle.
Honda Maintenance Minder Code Chart
Main Service Codes: A and B
| Code | What it generally means |
|---|---|
| A | Replace engine oil. Follow the exact service procedure specified for your model. |
| B | Replace engine oil and oil filter; inspect front and rear brakes and specified steering, suspension, drivetrain, brake lines, fluid levels, exhaust and fuel system components. |
Numbered Maintenance Subcodes
| Code | Typical recommended maintenance |
|---|---|
| 1 | Rotate tires. |
| 2 | Replace engine air cleaner and cabin dust/pollen filter; inspect drive belt, where applicable. |
| 3 | Replace transmission fluid and applicable transfer fluid, depending on model. |
| 4 | Replace spark plugs; perform applicable valve clearance inspection, timing belt replacement and water pump inspection as specified for the vehicle. |
| 5 | Replace engine coolant. |
| 6 | Replace rear differential fluid, if equipped. |
| 7 | Replace brake fluid, where this code is used. |
Some newer Honda vehicles use additional or different subcodes, including codes 8 and 9. Always confirm the exact requirements in the owner's manual for your year and model. Find Honda owner resources.
Common Honda Maintenance Codes Explained
Honda A1 Service
Engine oil replacement and tire rotation. Code A calls for oil service; subcode 1 adds tire rotation.
Honda B1 Service
Oil and filter replacement, vehicle inspections and tire rotation. Includes the inspections specified under B.
Honda A12 Service
Oil replacement, tire rotation, air filter service and drive belt inspection. Requirements vary by model.
Honda B12 Service
Oil and filter replacement, B-code inspections, tire rotation, air filter service and drive belt inspection.
Honda B13 Service
Oil and filter replacement, B-code inspections, tire rotation and transmission fluid service (plus applicable drivetrain fluid).
Honda B17 Service
Oil and filter replacement, B-code inspections, tire rotation and brake fluid replacement on models using subcode 7.
These examples describe common combinations, not a universal service menu or price quote. Confirm service items with the Waldorf Honda service team for your specific vehicle.
Honda Maintenance Minder Frequently Asked Questions
What does Honda B1 service mean?
Honda B1 generally means engine oil and oil filter replacement, a tire rotation and the vehicle inspections specified under maintenance code B.
What does Honda A12 service mean?
Honda A12 generally means engine oil replacement, tire rotation, replacement of applicable engine and cabin air filters, and drive belt inspection.
Can I still drive my Honda with 15% oil life?
At 15% oil life, maintenance is due soon. Schedule an appointment and follow the guidance in your vehicle's owner's manual. This percentage is not an engine oil level reading.
Is Honda B service the same as an oil change?
No. B service includes an engine oil and oil filter change plus additional inspections of specified vehicle systems. Any displayed numbered subcodes add other maintenance items.
Are Maintenance Minder codes the same on every Honda?
No. Codes and procedures vary by model, year and powertrain. Some newer vehicles use additional numbered codes. Check your owner's manual or ask a service advisor to verify your vehicle's requirements.
Does the Maintenance Minder cover every maintenance item?
No. Certain time-based or severe-use maintenance requirements may apply even when a code has not appeared. Your owner's manual provides the most accurate guidance for your vehicle.
Where can I schedule Honda Maintenance Minder service in Southern Maryland?
Waldorf Honda is located at 2450 Crain Highway, Waldorf, MD 20601. Honda drivers from Waldorf, Prince Frederick, Lexington Park and nearby Southern Maryland communities can schedule a service appointment online or call 855-314-1636.
Ready to Schedule Your Honda Service?
Whether your Honda displays A1, B1, A12 or another maintenance code, the Waldorf Honda service team can help confirm the recommended maintenance for your vehicle.
Waldorf Honda Service Center
2450 Crain Highway, Waldorf, MD 20601
Service: 855-314-1636
Information reviewed against Honda Maintenance Minder owner guidance. Exact service requirements depend on your Honda's model, model year and operating conditions. Last content review: November 2026. Waldorf Honda service personnel should verify model-specific guidance before publication.