Most of the time, inflating all four tires to the recommended cold pressures and driving a short distance will extinguish the tire pressure monitoring system (TPMS) light. If it stays on, a few common causes—from a needed relearn to a slow leak or a faulty sensor—could be at play.
Understanding the TPMS and how it behaves on a Honda Accord
The TPMS uses sensors in each wheel to monitor tire pressure and alert you when a tire is underinflated or if there’s a sensor fault. After inflating tires, the system may automatically relearn the new pressures, but sometimes you must drive or perform a manual reset for the light to go out. Temperature changes can also cause readings to shift, especially if you inflated the tires when they were cold or in a warmer environment.
Common reasons the light stays on
Before you head to a shop, check these typical causes and how to address them:
- One or more tires remain underinflated after inflation. Recheck all four tires using a reliable gauge and compare against the door jamb label for your Accord’s recommended cold pressures.
- Temperature changes that lower tire pressure after you’ve inflated them. A drop of a few psi can trigger the light, especially in cooler mornings.
- A slow leak or puncture in a tire (nail, screw, or bead leak) that isn’t obvious at a quick glance.
- A faulty TPMS sensor or a dying battery in one of the wheel sensors. Sensor issues can trigger the light even if pressures read correctly.
- A recent tire rotation or replacement that requires a relearn of the TPMS to synchronize with the car’s ECU.
In summary, the light staying on after inflation is commonly due to pressure not being correct across all tires, a change in temperature, a small leak, sensor fault, or the need for a relearn.
What to do next if the light remains on
If you’ve confirmed all tires are at the recommended cold pressures and the light still glows, try these steps before calling a technician. These steps balance quick checks with the most likely fixes.
- Inflate all tires to the door jamb recommended pressures when they’re cold, then drive 10–20 minutes at highway speeds to see if the light resets.
- Inspect tires for visible leaks or damage and use soapy water on valve stems, beads, and tread areas to look for bubbles indicating a leak.
- Review the owner’s manual for the exact TPMS relearn procedure for your model year. Some Accords relearn automatically after a short drive, while others require a manual reset using a TPMS button or menu option.
- If the light remains after a relearn attempt, have a tire shop or Honda dealer scan the TPMS with professional tools to identify a faulty sensor or a software fault.
Bottom line: a stubborn TPMS light after inflation often means you need to recheck pressures, attempt a relearn, and rule out a sensor fault. A quick diagnostic at a shop can confirm if a sensor needs replacement or if there’s a leak you’ve missed.
Summary
Key takeaways: Always start by verifying all four tires (and the spare if it’s monitored) are at the door-jamb-recommended cold pressures. Temperature shifts and small leaks are common culprits. If pressures are correct, drive to trigger automatic relearn or perform the manual relearn per your manual. If the light persists, a professional TPMS diagnostic will identify sensor faults or needed repairs. Regular maintenance and timely tire sensor checks can prevent surprises on the road.