BMW Oxygen Sensor - Features, Failure Symptoms, and Product Review

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►Upstream or front oxygen sensors are responsible for measuring the exhaust as it comes out of the engine. This information is used by your BMW's DME to adjust fuel trim. Failed oxygen sensors can cause a check engine light as well as performance issues. Gareth Foley is here today to take you through some of the highlights, failure symptoms and fitment information about this oxygen sensor replacement from Bosch.


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