I think you're looking at the low tire pressure indicator, which is just to the left and below the 'C' on the engine temperature gauge. See this page:
https://techinfo.Honda.com/rjanisis/pubs/om/TW0606/TW0606O00062A.pdf
The temperature gauge sending unit, located on a 1989 Honda Accord LXI is located on the thermostat. It is the small connection with a single wire sticking out of it.
A short between the heater switch and temperature gauge.
On the dash, right below the temperature gauge.
instrument cluster needs to come out and apart to gain access and replace gauge
The engine is getting to hot in your 2002 Honda Civic for the temperature gauge to rise above normal. The back of fan might be failing.
Sit in the driver's seat and look through the steering wheel. That large gauge in the middle with 0-140 is the speedometer.
Could be your thermostat or your anti-freeze
Probably low coolant or a faulty thermostat
Transmission problem. Seek professional help.
A common problem with Honda cars is that the fuel gauge is stuck on full. This problem is solved by replacing the gauge cluster.
probably leaking or maybe a bad rad cap
replace temperature gauge