Oxygen sensor heater?????

i was driving and out of no where my check engine light comes on....i pulled down my glove box and did the ecu check and it flashed 4 long times and one short one...so i looked it up and my ecu is telling me that i need to check the oxygen sensor heater? is that just the oxygen sensor that plugs into my headers?

for future referance all u have to do is replace the oe o2 sensor in the front of the headders