Car saying Check Tire Pressure?

I have a 2015 Honda Civic SE that I just bought a few weeks ago. I know nothing about cars. My sister's boyfriend already aired up all the tires but the i light is still on and it's still saying "Check Tire Pressure". What is wrong?

You need to reset the alert. If the manual does tell you how, you can probably find out online, specific to make model and year

The main problem is that somebody too lazy to know how to check tire pressure is driving. Learn how to use a tire gauge, and if the pressure is good, have any tire store check out the pressure monitoring system.

Hi so go see a honda dealer as it has a fault.

First thing to do is exactly what it says. Check the pressures now, with a good pressure gauge, and make sure they're at whatever that car requires. If they are, you may need to reset the monitoring system or have it checked if that doesn't work.

Read the owners manual to find out if you need to manually turn the TPMS light out after filling the tires to the correct pressure. There's a chance the TPMS system lost it's programming and needs to be re-initialized. The sending units in the tires have batteries that can fail which also turns the light on.

Go to any tire retailer of have the tire PSI double checked. They'll do it free of charge. And have them show you how to do it yourself while you're at it.

If you have a spare, check the pressure in it as well. If that doesn't help, go to the dealer and have them check the monitors in each wheel. Those usually last more than 5 years and I'd ask for warranty coverage if one is bad. Those sensors are expensive. Drive around for about 20 minutes to see if the light goes out. If the light was always on find out if one of the monitors didn't get broken by a tire shop fixing a flat. I had to get TPMS checked and Big O tires did the check free with their computer. Mine were 7 years old and the batteries were very weak. Changing them all cost $400. It doesn't make the car drive any different, it's just an annoying light.

Before you waste a lot of time and money, make sure one of the tires doesn't have a leak. Check the pressure again.

You need to check the tire pressure.