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Old 05-17-2008, 10:08 PM   #1
Scooby Newbie
Member#: 135242
Join Date: Dec 2006
Chapter/Region: BAIC
2002 Impreza WRX

Default obd2 plug problems

Hey everyone, can anyone help me figure out this stupid plug problem. well first of all i took my 02 wrx to get smogged and the readings passed fine, but when it got to plugging in the scan tool or whatever they use their tool always read error, they asked if i unplugged my battery and i said yeah about 1000 miles ago lol, so now i do not know what to do...i have no cel or anything. i was also just browsing around under by the plug and i saw these 2 green male and female plugs, i just thought i'd connect them and see if that was the problem but when i did i started up my car and the cel was blinking..anyone know what that is? there were also 2 other plugs that i didn't plug in i was too scared to mess with them...well if anyone has any knowledge of this please let me know asap my registration date was due on the 12 so i've got to get this car with new tags. thanks.
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Old 05-17-2008, 11:28 PM   #2
Scooby Guru
Member#: 21808
Join Date: Jul 2002
Chapter/Region: E. Canada
Location: National Capital Region
02 GroceryGettAr
Nonemore Black


The green connectors are for diagnostic purposes only - they should not normally be connected.

Your OBD / inspection problems are because you disconnected the battery and thus reset the ECU - OBD-2 needs a number of drive cycles to set the 'readiness monitors'. You just need to keep driving until the readiness is set, then you'll pass no problem.
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Old 05-18-2008, 12:17 PM   #3
Scooby Newbie
Member#: 145108
Join Date: Apr 2007
2002 Impreza TS
Aspen White


Though if it was really 1000 miles ago, I'm surprised the engine computer isn't ready again. If you do the same sort of driving (ie, around town) every day, you might want to make sure to do an extended highway drive (at least 30 minutes) to get the computer to go through it's required drive cycle.
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