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O2 sensor problem

This is a discussion on O2 sensor problem within the External Engine forums, part of the LSx Technical Help Section category; Just a quick question. Over the past 2 weeks i have had the service engine light come on with the ...

  1. #1
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    O2 sensor problem

    Just a quick question. Over the past 2 weeks i have had the service engine light come on with the Code P0135 3 times. The booklet says it is an O2 sensor heater circuit malfunction. Bank 1 sensor 1. I was just wondering as to the degree of concern i should have with this problem and what i could do to fix it.
    Thanks

  2. #2
    Senior Member ninobrn99's Avatar
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    all bore 370 Trans Am

    fueling will be off, throttle response will be an issue. check the wires and make sure they arent burnt. you may also need to replace the sensor.

  3. #3
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    ok. i was expecting the possibility of replacing the sensor. If i replace the one that is malfunctioning, would i have to replace the other one as well?

  4. #4
    Life in the Fast lane sunsetorangess's Avatar
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    No, Just replace the one thats giving you issues.
    J
    2001 SS, Its not the car its the Driver that matters....

  5. #5
    Veteran 0rion's Avatar
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    Do you have LT's? That's a common code with headers. Might want to look at Bosch 13111's. They are supposed to help this problem.

  6. #6
    Senior Member ninobrn99's Avatar
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    supposed to, but dont always do it.

  7. #7
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    Nope no LTs. I live in california so long tubes are pretty much not an option for my car. But i have heard good things about bosch products. Have to check them out

  8. #8
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    i've gone through three upstream bosche o2's in the past couple weeks. so i'd stay away. i'm going to try delphi one's.

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