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02 sensor low voltage codes...help please

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Old May 22, 2007 | 06:44 PM
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Default 02 sensor low voltage codes...help please
scanned my car at oreilly's today and got the codes

PO131 02 sensor low voltage Bank 1 sensor 1
PO151 O2 sensor low voltage Bank 2 Sensor 1

What does this mean?...I have Bosch 13111's with longtube headers
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Old May 22, 2007 | 07:42 PM
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Looks like your o2's are on their way out. Both my fronts went out on me too, at the same time. I just swapped the back one's to the front and put the fronts in the back with o2 sims. Saved me some money.
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Old May 22, 2007 | 07:47 PM
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i got these new at the end of march...why would they be going out already
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Old May 22, 2007 | 07:51 PM
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Try clearing the codes a few times, and check your connections. Maybe they were put on wrong.
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Old May 22, 2007 | 09:40 PM
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There is a thread in the PCM forum on the Bosch 13111's: https://ls1tech.com/forums/pcm-diagnostics-tuning/583508-i-called-bosch-tech-re-slow-oxygen-sensors.html. You'll find your issue discussed extensively there.
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Old May 22, 2007 | 09:56 PM
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is the car tuned??? thats the same codes i got after doin any mod.had the car tuned and codes never came back..
a ported MAF will throw those codes as well....
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Old May 22, 2007 | 09:57 PM
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Originally Posted by 5_02ls1
is the car tuned??? thats the same codes i got after doin any mod.had the car tuned and codes never came back..
a ported MAF will throw those codes as well....
nope not tuned..waiting to install my heads/cam/stall first...will it hurt anything to leave it as is for now?
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Old May 22, 2007 | 10:01 PM
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Originally Posted by RevGTO
There is a thread in the PCM forum on the Bosch 13111's: https://ls1tech.com/forums/showthread.php?t=583508. You'll find your issue discussed extensively there.
all i could find in the first few pages was talk of "insufficient switching"
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