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LS - 4th Gen (2007-2017) Discussion topics related to the current flagship models LS460, LS460L and LS600H

Air fuel ratio sensor

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Old Mar 18, 2018 | 08:42 PM
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Default Air fuel ratio sensor

Dealership told me that my VSC light came on due to oil leaking on my air fuel ratio sensor . . .do i need to replace immediately? or do i have time to shop for a better price?
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Old Mar 19, 2018 | 01:42 PM
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The O2 sensor shouldn't be your primary concern, the leak should be. Did the dealer tell you where the leak was coming from?
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Old Mar 19, 2018 | 01:55 PM
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Yes, fuel pump gasket and fuel pump insolator
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Old Mar 19, 2018 | 01:58 PM
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Ah, yes. Common problem on our vehicles and plenty of DIY threads around here to help you with that if you're up to the task.

I'd say it's not incredibly pressing as in, don't let them scare you into paying stealership repair prices, but definitely look into getting it done soon as ignoring it is only going to make matters worse.
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Old Mar 19, 2018 | 02:01 PM
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Thx a bunch, they want $1500 just for labor, i wanted to punch him in the face for that quote, not to mention the $150 i dropped just for the diagnosis. i hope i can find someone who can fix for less than that
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Old Aug 11, 2025 | 09:34 AM
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Originally Posted by rodbellsr
Yes, fuel pump gasket and fuel pump insolator
Same thing happening to my LS460 now.
Air fuel ratio sensor needs replacement, but the sensor is clean without engine oil on it. The sensor is out due to age (145k miles)
parts: $450 (sensor plus gaskets etc. ), labor $800.
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