Honda 2010 Accord Sedan Technology Reference Manual page 5

Tire Pressure Monitoring System (TPMS)
Monitors the vehicle's tire pressures.
How It Works
Each tire valve stem contains a TPMS
sensor.
When the tire pressure drops
significantly below recommended levels,
the low tire pressure indicator comes on.
Indicators/Info
Display/TPMS
What to Do
Visually inspect the tires and use a tire air pressure
gauge to check which tire(s) have low pressure.
Inflate the tire(s) to the recommended pressures
listed on the label on the driver's doorjamb.
and