S2000 Engine Management Engine management topics, map and advice.

is my O2 sensor dying?

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Old May 28, 2011 | 10:40 PM
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Default is my O2 sensor dying?

hi there,
my car is EUDM 2007 with stock 2.0L engine.
it did 57,000 km/35,000 miles.

at closed loop AF oscilates between ~ 14.2-16.5:


do i need a fresh O2 sensor?

at open loop AF seems pretty stable though:
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Old May 30, 2011 | 04:43 AM
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bump.

have anynone else expirienced this AFR oscilation?
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