need help. i think my o2 sensor is broken cause it popped out when i was driving from my downpipe of my dc header and scrapped on the ground. i tightned it all the way back in and reset the ecu plenty of times and still teh o2 senors light is on. what should ido? where can i get a cheap o2 sensor?

 

If you read the CEL and it says O2 Sensor then i would replace the O2 Sensor.

 

where should i get it? cause aren't they expensive? will any o2 sensor from the k series engines work?

 

If you read your CEL and got O2 Sensor code id get it from OEM. OEM o2 sensor is your best choice for your car. Its expensive but its better in the long run.