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Contributor
45 Answers
- Posted on Feb 03, 2017
Re: LOCATION OF B1S1 SENSOR FOR 2002 AUDI A6 QUATTRO
Referencing oxygen sensor or O2 sensor or 'lambda sensor':
B1S1 is 'bank 1', which is the passenger side cylinder bank on a V6 or V8.
S1 is the 'upper' or 'upstream' sensor, closest to the cylinder.
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