6th Gen ('00-'05): P0102 code light OFF but code still reads
Thread Starter
Joined: Sep 2013
Posts: 81
From: Niagara Falls, Ontario
P0102 code light OFF but code still reads
P0102 - Mass or Volume Air Flow Circuit Low Input
2001 Monte Carlo SS
So after swapping out the MAF Sensor from another same year Monte the light on mine has now turned off on it's own after only driving it for a little bit. But when I go to check for any error codes (I need to get this thing past a safety) the P0102 code still triggers. Do I need to clear it then it will be all good? Thought by the light going off that it would clear the code too.
As of now I have no check engine lights on my dash anymore, all have been cleared except this one code that still pops on the code reader.
Any ideas?
2001 Monte Carlo SS
So after swapping out the MAF Sensor from another same year Monte the light on mine has now turned off on it's own after only driving it for a little bit. But when I go to check for any error codes (I need to get this thing past a safety) the P0102 code still triggers. Do I need to clear it then it will be all good? Thought by the light going off that it would clear the code too.
As of now I have no check engine lights on my dash anymore, all have been cleared except this one code that still pops on the code reader.
Any ideas?
Joined: Apr 2010
Posts: 12,601
From: Mentor, Ohio
Depends what the code reader is reading. The computer has different storages for trouble codes.
If the light is on, then you have an active code.
If the light is off, you could have a pending code (failed it's diagnostic, but not enough yet to activate the light) or a history code (one that failed, activated the light but is no longer active). You could also have a light out on the cluster (does the check engine light activate when you start the car)?
If you clear the codes, you would then have to drive around for the readiness monitors to reset or keep driving and see if the code clears the history after enough drive cycles.
If the light is on, then you have an active code.
If the light is off, you could have a pending code (failed it's diagnostic, but not enough yet to activate the light) or a history code (one that failed, activated the light but is no longer active). You could also have a light out on the cluster (does the check engine light activate when you start the car)?
If you clear the codes, you would then have to drive around for the readiness monitors to reset or keep driving and see if the code clears the history after enough drive cycles.