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Bank 1 I believe is the drivers side. Sensor 2 would be the 2nd O2 sensor on the exhaust starting at the engine. I believe it's on the pipe before the catalytic converter. I have a 98 so it may be different. If the light is out it's probably functional. I've read where you can clean them but haven't had the situation arise yet. I changed 1 before I heard you can clean them. But cleaning depends on why it faulted. Bets I can do...Hope it helps.
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