2001 330ci check engine light is on. Is that a big problem or just an o2 sensor
Wednesday, February 23rd, 2011 AT 11:01 PM
Check engine light on
Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.
Go to Autozone they'll scan it for free-
Wednesday, February 23rd, 2011 AT 11:05 PM
The o2 sensor was just replaced is it possible that its not resetting. Do u need to drive it a little?
Thursday, February 24th, 2011 AT 12:17 AM
Raz is correct, have the scan performed and it will tell you the next step. Driving it wont change the fact that the light is on.