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Old 02-03-2010, 08:01 AM   #1
BMWQUEEN01
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Join Date: Jun 2009
Location: Atlanta, GA
Posts: 13
My Ride: 01 325i
02 Sensors HELP!!!

My check engine light is on and the codes I'm getting is P0420 Catalyst Sys Efficiency Below Threshold (bank 1) and P1193 Manufacturer specific code. I'm thinking that's due to my 02 sensor going out. Hopefully the sensor hasn't messed up my cat. I went to a mechanic yesterday and he said I needed a new cat, and the computer said it was my 02 sensor.

So I'm here wondering which should I do first and get some prices and what not. I'm calling a few dealers right now but if anyone has any of the parts I need on here that would be great too!!!

Thanks!
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