Have you ever seen a strange code like A1237 appear on your Honda’s dashboard and wondered what it means? You’re definitely not alone. Many drivers are caught off guard by these maintenance alerts.
Rather than being just a jumble of letters and numbers, the Honda A1237 code is your car’s way of letting you know it’s time for scheduled service. It’s a built-in reminder designed to help you stay on top of essential maintenance and avoid bigger issues down the road.
What is the Honda A1237 Service Code
The Honda maintenance minder code sheet above lists all the main and sub service items with A1237 highlighted.
The Honda A1237 maintenance code is an oil change, tire rotation service, engine and cabin air filter replacement, drive belt inspection, transmission fluid replacement, transfer fluid replacement (if equipped), and brake fluid replacement.
The “A” stands for an oil change, the “1” stands for a tire rotation, the “2” stands for an engine and cabin filter replacement with drive belt inspection, the”3″ stands for a transmission fluid replacement and transfer fluid replacement, and the “7” stands for brake fluid replacement.
The A1237 service is similar to the A123 service but it adds brake fluid replacement. It is typically performed by a Honda dealership or with a local mechanic.
Honda A1237 Service Cost
The A1237 service typically costs over $400. The cost will depend on the specific Honda vehicle you have and the labor cost rate.
For maintenance services like the A1237, most dealerships and 3rd party auto shops offer coupons and discounts. We suggest calling several locations beforehand to get the best deals.
Oil and Filter Change
The “A” in A1237 service, or oil change, typically costs $50-$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
Tire Rotation
The “1” in A1237 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
Air Filter Replacement
The “2” in A1237 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
Transmission Fluid Replacement
The “3” in A1237 service for Honda vehicles can cost over $100 to $200 from the fluid depending on your vehicle. However, we suggest calling your Honda dealership or 3rd party auto repair shop for exact quotes. Only Hondas with 4WD or AWD will have a transfer case and need the fluid changed out.
RepairPal offers an estimator transmission fluid but not the transfer case fluid replacement portion of the “3” service:
Transmission Fluid Replacement Estimator
Brake Fluid Replacement
The “7” in A1237 service for Honda vehicles can cost $80 to $130 depending on your vehicle. However, we suggest calling your Honda dealership or 3rd party auto repair shop for exact quotes.
Honda A1237 DIY Cost
Want to save money or simply prefer to take charge of your Honda’s maintenance? Performing the A1237 service yourself is a smart way to cut costs—especially if you have the tools, time, and confidence to handle routine car care.
On average, a DIY A1237 service will cost between $150 and $250, depending on the type of motor oil, oil filter, air filters, and transmission fluid you choose. Premium full-synthetic oils or genuine Honda parts will be on the higher end, while high-quality aftermarket alternatives can help reduce your total spend.
While going the DIY route can save you on labor costs, it’s crucial to use the right parts and fluids to keep your Honda running at its best. We recommend using OEM Honda parts whenever possible, but reputable aftermarket brands such as Bosch, Mobil 1, Fram, K&N, and WIX are also solid options.
Oil Filter
Brake Fluid
Be sure to consult your owner’s manual or call a local dealership to confirm the correct parts and fluid specifications for your exact model and year. Most of these items are readily available online or at your local auto parts store.
Taking on the A1237 service yourself is not only cost-effective but it also gives you a better understanding of your vehicle’s condition and helps you build confidence in basic car maintenance.