BMW O2 sensors

Wheels

E39 M5 Sensor Replacement
ByChris Parente November 12, 2022June 22, 2023

Last weekend I replaced some original sensors in my 2002 BMW E39 M5. Scandinavian Import Servicenter in Rockville, MD kindly invited the DIY program back into their beautiful facility. Last year I replaced my power steering hoses and reservoir at the same location. This time I needed to replace some sensors that were original to…

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Wheels

S54 O2 Sensors — Deciding Not to DIY
ByChris Parente November 30, 2015

Recently my 2006 E46 M3 started throwing a code signifying a problem with one of the oxygen sensors in front of the catalytic converter (pre-cat). The S54 engine in the E46 M3 has four oxygen sensors, two in front of the catalytic converter and two behind. Initially I thought this was a chance for a…

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