The Tire Pressure Monitoring System (TPMS) sensors on a 2019 Honda Civic are direct sensors located in each wheel. Each wheel carries its own sensor that monitors air pressure and communicates with the car’s computer. There isn’t a single sensor in the engine bay or trunk; access and servicing typically require removing the wheel and tire.
Understanding TPMS on the Civic
Most Civics built for the U.S. market use direct TPMS, meaning each wheel has a pressure sensor with its own power source. These sensors transmit a radio signal to the TPMS control module as you drive; if a tire is underinflated, the dashboard TPMS warning light illuminates. Indirect TPMS, which relies on ABS wheel-speed sensors rather than individual wheel sensors, is not the system used on this model.
Where the sensors sit in a 2019 Civic
To locate or inspect a TPMS sensor, you must remove the wheel and tire. Each wheel houses a small sensor mounted in the wheel assembly near the bead seat, typically attached to or integrated with the valve stem. In practice, you’ll find the sensor inside the wheel casing, behind the tire bead, with the valve stem projecting through the rim.
Note: The sensors aren’t visible while the wheel is mounted on the car; you’ll only be able to see them once the tire is dismounted or the wheel is off the vehicle. The exact appearance varies by wheel design and trim, but the four sensors are always present—one for each wheel.
Before you look for them, here is a quick guide to what you’ll encounter on each wheel:
- A dedicated TPMS sensor mounted in the wheel, often near the valve stem.
- A sensor body that may be integrated with the valve stem or mounted just behind the rim bead on the wheel.
- A valve stem that allows air to be added or released; the sensor monitors pressure and reports data wirelessly.
- A battery-powered sensor that typically lasts several years; sensors are replaced as a unit when needed.
Following tire service, a TPMS relearn may be required to re-sync the sensors with the car’s computer. Some shops perform this automatically with a scan tool or by following the vehicle’s built-in relearn procedure. Driving the car for a while after work can sometimes trigger automatic relearn.
Maintenance and service considerations
When tires are replaced, rotated, or repaired, a professional should handle the TPMS sensor. The process involves removing the tire from the wheel, installing a new sensor if required, seating the tire bead, and performing a TPMS relearn so the system recognizes the sensors again.
If the TPMS light stays on
Begin by checking all four tire pressures with a gauge and bring them to the recommended level shown on the door jamb sticker or in the owner’s manual. If pressures are correct and the warning remains, a faulty sensor or battery, a sensor wiring issue, or the need for a relearn could be the cause. Have the system diagnosed by a tire shop or Honda dealer.
Summary
On a 2019 Honda Civic, the TPMS sensors are four direct sensors located in each wheel. They sit inside the wheel assembly near the bead with the valve stem providing external access. They are not located in the engine bay or trunk, and servicing them requires wheel removal and a possible relearn procedure to restore proper readings.