where is the bank 1, sensor 1 o2 sensor located on a 2003 bmw 540i?
Asked by hairbymary Sep 16, 2007 at 05:37 PM about the 2003 BMW 5 Series 540i Sedan RWD
Question type: Maintenance & Repair
1 Answer
littlehorn answered 17 years ago
I believe this is the upstream 02 sensor, usually located in the exhaust system either right in front of (to the engine side of) the catalytic convertor, or in the exhaust manifold.
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