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Cat efficiency bank 1&2 and 02 Sensor 1 & 2 error codes Cat efficiency bank 1&2 and 02 Sensor 1 & 2 error codes
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Old 03-12-2009, 12:59 PM
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Cat efficiency bank 1&2 and 02 Sensor 1 & 2 error codes
2002 X5 3.0 140k miles got error codes for

stealer is saying need to replace everything for about 3k. did some reading and not sure about changing cat yet (no odor, no noise). The dealer proposes changing all 4 O2 sensors first. I ordered all 4 sensors and the tool and will try to tackle the project myself. I searched but was unable to find pictures on the replacement - is there a DIY with detailed instructions? thanks in advance
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