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General Maintenance, Troubleshooting & Accidents. What kind of oil should I put in my car for drag racing? When should I change the spark plugs? How do I fix that rattling sound I'm hearing? Ask your maintenence questions here!

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Old 07-05-2009, 01:58 AM   #1 (permalink)
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Exclamation Diagnostic issue

i got an 02 wrx...when i first got the car it wasn't throwing out codes, but when i checked out under the steering column there was a disconnected wire, when connected it threw out a code, pretty sure its the o2 sensor, but idk...NEED ADVICE
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Old 07-05-2009, 08:07 AM   #2 (permalink)
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..........disconnect the wire.Some of those connectors under the dash are diagnostic connectors for the ECU.They are only ment to be connected to access the ECU.
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Old 07-05-2009, 08:47 AM   #3 (permalink)

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there are "test mode connectors" under the driver steering column. these are supposed to be connected to flash your ECU. they should be green in color & when hooked up put your car in test mode.

if you have a 2.0L, there is another initialization connector that is translucent white (located near the green ones). if you have an 02 wrx, it connects to a blue plug. if it is 03-05's there is a solid white one that the translucent plug goes into.

as donkey said, if any of these are plugged together, unplug them
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Last edited by wrxtreme06; 07-05-2009 at 08:50 AM.. Reason: added more info
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