How do you reset the Check Engine Light? - BMW Forum

jrw7714 · 03-26-2008, 11:42 AM

Can the check engine light on my 2004 33oci. be reset by disconnecting the neg. battery terminal? Is there a fuse that also could be pulled to reset? I haven't run a code check yet but have cleaned the maf sensor which didn't make the light go away. Any suggestions? Car runs fine.

BadLuck · 03-26-2008, 08:34 PM

have you taken your car to autozone or some parts store with an OBDII reader. They'll be able to read and print out a thing that tells you whats the issue with your car.

edit
theyll be able to reset your codes too.

eurospec325i · 03-26-2008, 10:59 PM

Quote:

Originally Posted by jrw7714

Can the check engine light on my 2004 33oci. be reset by disconnecting the neg. battery terminal? Is there a fuse that also could be pulled to reset? I haven't run a code check yet but have cleaned the maf sensor which didn't make the light go away. Any suggestions? Car runs fine.

as long as the code problems were fixed , disconnecting the terminal should work, about ten minutes then reconnect, let me know how things work out.

jrw7714 · 03-30-2008, 09:51 AM

Just purchased a Actron CP9125 Scanned on Amazon for $45. Works great. Found an P0411 error code (Secondary Air Injection Syetem Incorrect Flow) Appears to be a problem with the air pump system, cracked/pinched hose, pump ? Checking all parts of system now but was able to clear the code with the Actron pocket scanner. Great investment!