P0031 code... O2 sensor... - Miata Turbo Forum -Boost cars, acquire cats.

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Old 01-23-2015, 05:00 PM   #1
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Default P0031 code... O2 sensor...

Okay... still got about 2-3 months till turbocharging it but today I got check engine light.. pulled the code and it was bank1 (something)1 O2 sensor... circuit low...

Looked at voltages... firat one fluctuated between 0.20/0.80V the other pne was stuck at 0.1/0.2 when revving but when on idle it got up slowly to 0.8V ...

Any idea?
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