Why is my tire pressure light still on after filling tires on my Honda Accord?
A tire pressure warning light that stays on after you’ve inflated the tires usually means the TPMS needs a relearn, there’s a slow leak somewhere, or a sensor issue. Start by confirming all four tires are at the correct pressure and then follow the relearn steps before seeking professional help.
Understanding the TPMS in your Honda Accord
The Tire Pressure Monitoring System (TPMS) warns you when a tire’s pressure deviates from the manufacturer’s recommended level. In most Honda Accords, sensors are located in each wheel and report pressure to the car’s computer. Temperature changes, driving conditions, and recent tire work can affect readings. The spare tire typically isn’t monitored, so the warning is usually tied to the four active tires.
Direct vs indirect TPMS
Most Honda Accords use a direct TPMS with wheel-mounted sensors that measure actual air pressure. Some older or specific trims may use an indirect TPMS that relies on ABS wheel-speed data rather than live pressure readings. Each system can trigger a warning if a sensor or calibration issue is detected, even if the physical tires appear properly inflated.
Common reasons the light stays on after inflation
The following list covers the most frequent causes you’ll encounter after you’ve inflated the tires to the recommended pressure.
- Underinflation persists after inflation due to a slow leak or incorrect target pressure. Check all tires with a reliable gauge while they’re cold, and inflate to the door jamb sticker’s recommended psi values.
- A tire has a slow leak or puncture (nail, bead leak, or rim leak). Inspect for cuts, nails, or damaged valve stems and have repairs performed as soon as possible.
- A TPMS sensor has a faulty battery or sensor failure. Faulty sensors can keep the light on and require testing and replacement by a tire shop or dealer, sometimes with sensor programming.
- The TPMS relearn procedure wasn’t completed after inflating or rotating tires. Some models require a specific relearn sequence or driving profile to recalibrate the system.
- A tire was recently rotated or replaced and hasn’t been relearned by the system. Relearn is often needed to align sensor IDs with wheel positions.
- Valve caps are missing or damaged. A missing cap can cause slow air leaks and trigger warnings; replace caps as needed.
- Extreme temperature changes or frequent pressure swings may cause temporary discrepancies. Recheck pressures after weather changes and drive to allow calibration if applicable.
If the light continues to stay on after confirming proper inflation and performing any required relearn, there may be a sensor or system fault requiring professional service.
What to do now: steps you can take
Follow these practical steps to clear the warning and verify TPMS functionality.
- Check all four tires with a reliable gauge when cold, and inflate to the exact pressures shown on the door jamb sticker.
- Drive the car for about 10–30 minutes at highway speeds to allow the TPMS to relearn, if your model supports automatic relearn by driving.
- Use the TPMS reset or relearn procedure if your Accord has one—consult the owner’s manual or onboard menu for the exact steps.
- Inspect tires for slow leaks, punctures, or damaged valves; have any issues repaired or tires replaced as needed.
- Check valve stems and caps; replace missing or damaged components to prevent leaks.
If the light remains on after these steps, arrange service with a dealer or tire shop. A technician can diagnose sensor faults, perform a manual relearn, or replace faulty sensors. If the TPMS light is blinking, seek prompt service, as that signals a system fault that could affect tire pressure monitoring.
When to seek professional help
Persistent TPMS warnings after inflation merit a professional check, especially if you notice irregular tire wear or handling issues. A technician can perform a TPMS diagnostic, verify sensor health, and reprogram or replace components as needed. After any tire work or wheel changes, a dealer may perform a dedicated relearn procedure to ensure accurate readings.
Contact a professional if the warning returns after a relearn, if you recently bought new tires, or if you observe the light blinking or other unusual symptoms. They can confirm whether the system uses direct or indirect TPMS and ensure proper calibration.
Summary
On a Honda Accord, a tire pressure light that stays on after inflating typically points to a TPMS relearn requirement, a slow tire leak, or a sensor fault. Start by confirming all four tires are at the recommended cold pressures, perform any required relearn procedure, and inspect for leaks or damaged sensors. If the warning persists, have a professional diagnose and address sensor or system issues. Regularly checking tire pressure and understanding your model’s TPMS procedure helps prevent future warnings and keeps you safely on the road.
