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Guest
Posts: n/a
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I have a BMW 330ci convertible, it recently went for mot and it failed on the lambda sensor but im not sure what one it is before the cat, or after the cat any help would be great thanks
__________________ This post was auto-generated based upon a question asked on our tech article page here: Pelican Technical Article: Replacing your 3-Series E30 Oxygen (Lambda) Sensor |
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Moderator
Join Date: Jul 2012
Location: New England
Posts: 3,189
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The oxygen sensors mounted close to engine, in the exhaust manifold are pre-catalyst. The oxygen sensors underneath the vehicle, behind catalytic converter are post-catalyst
- Nick |
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