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Bosch universal O2 sensor not compatible

Discussion in '80-Series Tech' started by KANE, Feb 22, 2007.

  1. KANE

    KANE

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    In an effort to save a buck, I installed Bosch universal o2 sensor in my and my dad's 97 LCs. Long story short, the result was error code p0135 on both rigs. I replaced with Toyota parts and problem solved. Hope this saves someone time and $.
     
    Last edited: Feb 22, 2007
  2. landtank

    landtank SILVER Star

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    are these the same O2 sensors that Sumotoy was bragging on?
     
  3. stevek

    stevek

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    Only for OBDI trucks though...something about the heating circuit on the OBDII trucks makes it incompatible.
     
  4. supercarrera

    supercarrera I Like LEDs

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    I think he said that post 95s would throw and error code. Pre 95 would not throw the code.
     
  5. landtank

    landtank SILVER Star

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    OK, I would never consider using anything but OEM personally but if these were the same ones we'd need to update that thread with a warning.
     
  6. IBCRUSN

    IBCRUSN

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    without searching for that thread he had stated more than once that those O2 sensors would not be compatible with the 95+ OBDII ECM. I installed the Bosch units in my 94 with no issues or CEL.
     
  7. Hayes

    Hayes

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    Yup.
    That's my recollection of the original post, and my experience with the sensors as well--work great on my '93.

    Hayes


     
  8. MikePL

    MikePL

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    The Bosch sensors have a different resistance on the heater and the ECU reads it as a malfunctioning heater. I believe the NGK/NTK sensors are an exact OEM replacement (except for the lack of flange) and cost more or less like the Bosch ones
     
  9. RavenTai

    RavenTai

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    same here. no drama no splicing, no maybe's, takes just a few minutes and they are good for another 150K
     
  10. cam75w/ls1

    cam75w/ls1

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    Correct, The Bosch sensors vs. Toyota reads different resistance in the heater circuit. I've been through this myself and finally convinced the customer to buy a OEM one. Same thing happened on a Lexus ES300.
     
  11. fj80psi

    fj80psi

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    I have seen many backyard approaches to "universal" including: butt connectors, solder & electrical tape, household wire nuts, & even shielded with heat tape from Autozone. Use OEM or proven plug in sensors only. The sensor plays a major part in your fuel trims which can effect engine life, fuel economy etc. Besides you may save money, but not in the long haul.