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P0131 Trouble Code....?

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Old 01-09-2006, 11:16 PM
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Default P0131 Trouble Code....?

my friends civic shows a p0131: O2 Sensor Circuit Low Voltate (Bank 1 Sensor 1)

does this require a o2 sensor (before cat) to be replaced? or is it an electrical problem?

i did a search and didnt find my answer. thanks
Old 01-10-2006, 12:25 AM
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Default Re: P0131 Trouble Code....? (FrostWhiteDC4)

bank 1 sensor 1 is o2 before the cat. if its saying low voltage. check. should be about .45 volts during idle. you might be running lean
Old 01-10-2006, 12:26 AM
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Default Re: P0131 Trouble Code....? (postman)

how do i check voltage?
what causes the car to run lean?
Old 01-10-2006, 08:17 AM
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Default Re: P0131 Trouble Code....? (FrostWhiteDC4)

Old 01-10-2006, 08:46 AM
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Default Re: P0131 Trouble Code....? (FrostWhiteDC4)

i read the same code off of my EM1 and i had to replace the sensor, fixed it and nothing since, to test it simply grab a volt meter and find the + wire and test, as far as running lean there could be a million things doing that
Old 01-10-2006, 08:55 AM
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Default Re: P0131 Trouble Code....? (j_fukin_t)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by j_fukin_t &raquo;</TD></TR><TR><TD CLASS="quote">i read the same code off of my EM1 and i had to replace the sensor, fixed it and nothing since, to test it simply grab a volt meter and find the + wire and test, as far as running lean there could be a million things doing that </TD></TR></TABLE>\

thanks, i will try this
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