Question about 2008 Chevrolet Cobalt
How many mile or starts before all sensors are ready for Smog Check.
It's not a matter of how many miles, it's more "how" you drive. If you do not have an engine light on now, whatever you do, DON'T disconnect the battery. That will trip all your readiness monitors and make it more difficult to complete the drive cycle. If you have a code set now and the engine light is on, it would be best to get the car scanned and find out how to repair the problem or you are going to waste a lot of time and money driving around and going to the test to get rejected. If there is no light on but you have made a repair and cleared the codes, this is how to drive the car to reset the readiness monitors.
Performing a GM OBDII Driving cycle:
Do not leave the key in prior to the cold start or the heated oxygen sensor diagnostic may not run.
Posted on Apr 20, 2009
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Posted on Jan 02, 2017
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