before removing said sensor which is located on the driverside of the car before the cat - have it tested for signal.

I say this because if you have an exhaust leak near it the sensor code will be set.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)