Tire Pressure Changing by Temperature
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
Tire pressures increase slightly as the temperature in the tires rises during driving.
Pressures can also increase or decrease slightly with changes in outside air temperature.
A temperature change of about 18 °F (10 °C) changes tire pressure by about 10 kPa (0.1 kgf/cm2 , 1.5 psi). If the temperature drops, tire pressure could decrease enough to turn on the low tire pressure indicator, but later, the tire temperature could increase enough to turn the indicator off. To resolve a complaint of such intermittent indications, confirm and clear the stored DTC(s) and check the tire pressures. Then explain to the customer how temperature changes can affect the system.