Hello all,
I have a '00 Buick Century Limited and the service engine light has been coming on. I checked it with an ODB-II and it read P0172. Now, I have changed the Oxygen Sensor, however it is still giving the same error. I ran a bottle of Injector Cleaner through and the light still came back on.
I haven't checked the MAF with a voltmeter yet, but I will and I doubt that this is is. What else could it be? A bad injector? I'm running out of ideas so any help is greatly appreciated.