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technician117 · 09-01-2019, 07:59 AM

O2 sensors can get lazy and not throw codes. Happens all the time and across any make/manufacturers. At 50k miles, his are about due as a PM change anyway (the primary o2's).

09-01-2019, 07:59 AM	#15
technician117 Captain 251 Rep 606 Posts Drives: 2000 M5, 2001 M5, 2013 M5 6MT Join Date: Jul 2018 Location: Buffalo iTrader: (1) Garage List 1990 BMW M5 [0.00] 2000 BMW M5 [0.00] 2013 BMW M5 [0.00]	O2 sensors can get lazy and not throw codes. Happens all the time and across any make/manufacturers. At 50k miles, his are about due as a PM change anyway (the primary o2's).
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